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Mutator method

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become more sophisticated. Many automatic mutators and accessors eventually get replaced by separate blocks of code. The benefit of automatically creating them in the early days of the implementation is that the public interface of the class remains identical whether or not greater sophistication is
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other than private and access it directly from outside the objects. Much finer control of access rights can be defined using mutators and accessors. For example, a parameter may be made read-only simply by defining an accessor but not a mutator. The visibility of the two methods may be different; it
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the class where they are defined often requires some additional thought. In the early days of an implementation, when there is little or no additional code in these blocks, it makes no difference if the private instance variable is accessed directly or not. As validation,
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to the variable to be modified is passed to the mutator, along with the new value. In this scenario, the compiler cannot restrict code from bypassing the mutator method and changing the variable directly. The responsibility falls to the
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are made private to hide and protect them from other code, and can only be modified by a public member function (the mutator method), which takes the desired new value as a parameter, optionally validates it, and modifies the private
4592:, the object system is a way to organize code that comes in addition to modules and units. As in the rest of the language, the object system has first-class values and lexical scope is used to control access to objects and methods. 183:. In these cases, no code blocks are created for validation, preprocessing or synthesis. These simplified accessors still retain the advantage of encapsulation over simple public instance variables, but it is common that, as 133:
or preprocessing of incoming data. If all external access is guaranteed to come through the mutator, then these steps cannot be bypassed. For example, if a date is represented by separate private
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In VB.NET 2010, Auto Implemented properties can be utilized to create a property without having to use the Get and Set syntax. Note that a hidden variable is created by the compiler, called
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Accessors conversely allow for synthesis of useful data representations from internal variables while keeping their structure encapsulated and hidden from outside modules. A monetary
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member. Unlike Java, no explicit methods are defined; a public 'property' contains the logic to handle the actions. Note use of the built-in (undeclared) variable
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Accessor functions can be less efficient than directly fetching or storing data fields due to the extra steps involved, however such functions are often
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may be used both to declare a private variable in a class and to provide either read-only or read-write public access to it respectively.
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In later C# versions (.NET Framework 3.5 and above), this example may be abbreviated as follows, without declaring the private variable
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This example illustrates the VB.NET idea of properties, which are used in classes. Similar to C#, there is an explicit use of the
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supports a getter and setter function syntax. In version 2 of the language getter and setter class/struct methods should have the
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options (even multiple times) to define reader methods, setter methods and accessor methods (a reader method and the respective
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Struct definitions are an alternative way to define new types of values, with mutators being present when explicitly required:
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Using the abbreviated syntax means that the underlying variable is no longer available from inside the class. As a result, the
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This is a simple class in Delphi language which illustrates the concept of public property for accessing a private field.
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extension specifies means to access a slot's reader and writer function names, including the ones generated with the
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is often useful for the accessor to be public while the mutator remains protected, package-private or internal.
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The following example shows a definition of a student class using these slot options and direct slot access:
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Defining individual accessor and mutator methods creates space for pre-processing or validation of the data
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is private, i.e. only visible from the Student class, and the "setter" and "getter" are public, namely the "
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would result in an error. Privileged access to the underlying variable is available from within the class.
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is private, i.e. only visible from the Student class, and the "setter" and "getter" is public, namely the
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accessor may build a string from a numeric variable with the number of decimal places defined by a hidden
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may appear where some internal access makes use of the newer code while in other places it is bypassed.
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Using traditional Objective-C 1.0 syntax, with manual reference counting as the one working on
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to ensure the variable is only modified through the mutator method and not modified directly.
36:, which returns the value of the private member variable. They are also known collectively as 5439: 4870:, individual accessor and mutator methods may be defined, or the metaprogramming constructs 188: 68: 4064:# Moose uses the attribute name as the setter and getter, the reader and writer properties 8: 5545: 4067:# allow us to override that and provide our own names, in this case get_name and set_name 126: 2130:;; The slot accessing options generate methods, thus allowing further method definitions 1772:
portion of the property must be present for assignment. Access can be restricted with a
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Mutator methods may also be used in non-object-oriented environments. In this case, a
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method). Slots are always directly accessible through their names with the use of
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mutator while for consistency the same private instance variables are accessed by
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offer a convenient alternative without giving up the utility of encapsulation.
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This example uses a Python class with one variable, a getter, and a setter.
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is used to create objects representing a student with only the name stored.
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but they typically appear at different levels of the object hierarchy.
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for mutators and accessors in a single line—as for example C#'s
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Modern programming languages often offer the ability to generate the
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used to control changes to a variable. They are also widely known as
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In the examples below, a fully implemented mutator method can also
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representing a student with only the name stored, one can see the
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representing a student with only the name stored, one can see the
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Or (using a deprecated way to define accessors in Web browsers):
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Manipulation of parameters that have mutators and accessors from
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checks, preprocessing or other sophistication is added, subtle
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The alternative to defining mutator and accessor methods, or
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the input data or take further action such as triggering an
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where the mutator is defined provides an opportunity for
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CLOS itself has no notion of properties, although the
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added, requiring no extensive refactoring if it is.
5538: 145:variables, then incoming dates can be split by the 3681:3.2, generating the same code as described above: 223:which eliminates the overhead of a function call. 5518: 2367:// same effect as student.name("David") 5651: 5387:. Using another variable within the class named 3669:Using newer Objective-C 2.0 syntax as used in 5463: 86:In programming languages that support them, 32:methods. Often a setter is accompanied by a 5492:"Run Time Efficiency of Accessor Functions" 4962:Read-write simple public access to implied 3767:4.4 and up, syntax can be even simplified: 4936:Read-only simple public access to implied 4250:* @param string $ newName The name to set. 2957:Or (using prototypes for inheritance and 43:The mutator method is most often used in 5498: 5489: 2472:/// Get or set the name of the student. 5652: 51:. According to this principle, member 2708:In this example constructor-function 64:. Mutator methods can be compared to 5566:"Functions - D Programming Language" 5269: 3821://Nothing goes here and it's OK. 3336: 1650:/// Gets or sets student's name 47:, in keeping with the principle of 13: 5383:, to correspond with the Property 14: 5671: 5466:"Automatic Properties in C# 3.0" 4143:PHP defines the "magic methods" 2391:// same effect as student.name() 2326:instance can be used like this: 231: 177:public string Name { get; set; } 3091:Or (without using prototypes): 1923:; student-name is setf'able 104: 5622: 5598: 5578: 5558: 5483: 5457: 3474: 1828: 1610:, which are a special type of 1: 5660:Method (computer programming) 5526:"CLHS: 7.5.2 Accessing Slots" 5450: 2703: 1602:This example illustrates the 191:and requirements change, the 5126: 4154:In this example of a simple 2584:In this example of a simple 7: 5630:"PHP: Overloading - Manual" 5428: 4151:for properties of objects. 3182:Or (using defineProperty): 1776:-specific access modifier. 1133:"%s's new age = %i 1064:"%s's old age = %i 238: 226: 45:object-oriented programming 10: 5676: 4202:* @return string The name. 3973:Or, using Class::Accessor 4732:; => "Alice" 4583: 4312: 2396: 1835:Common Lisp Object System 5393: 5284: 5168: 5164: 5130: 4992: 4968: 4942: 4883: 4775: 4594: 4470: 4319: 4175: 4043: 3975: 3833: 3769: 3683: 3489: 3340: 3184: 3093: 2963: 2832: 2714: 2605: 2403: 2328: 2206: 1881: 1778: 1721: 1620: 1433: 1288: 1185: 950: 574: 402: 267: 242: 5546:"MOP: Slot Definitions" 4988: 4861: 4856:; => "Bob" 4768:; => "Bob" 3829: 2579: 185:system designs progress 113:blocks, is to give the 5506:"CLHS: Macro DEFCLASS" 5490:Tim Lee (1998-07-13). 5464:Stephen Fuqua (2009). 5435:Property (programming) 4138: 1281: 420:/* opaque structure */ 5610:developer.mozilla.org 5440:Indexer (programming) 1597: 1439:"Student.h" 1431:In file Student.cpp: 962:"student.h" 592:"student.h" 4005:follow_best_practice 2475:/// </summary> 2192: 1653:/// </summary> 1214:; ./$ < > $ @ 395: 69:operator overloading 4575:# bypass the getter 4560:# bypass the setter 4557:"Charlie" 4039:Moose Object System 3993:qw(Class::Accessor) 2469:/// <summary> 1870:MetaObject Protocol 1647:/// <summary> 1286:In file Student.h: 1007:"Maurice" 572:In file student.c: 400:In file student.h: 193:demands on the data 181:attr_accessor :name 4124:'set_name' 4112:'get_name' 3755:And starting with 2961:accessor syntax): 2139:set-student-number 2112:get-universal-time 2019:get-universal-time 1980:set-student-number 1183:In file Makefile: 408:#define _STUDENT_H 405:#ifndef _STUDENT_H 187:, the software is 5270:Visual Basic .NET 4832:set-student-name! 4823:"Alice" 4524:"Alice" 2361:"David" 2028:student-birthdate 1947:student-birthdate 1294:#define STUDENT_H 1291:#ifndef STUDENT_H 115:instance variable 5667: 5644: 5643: 5641: 5640: 5626: 5620: 5619: 5617: 5616: 5602: 5596: 5595: 5593: 5592: 5582: 5576: 5575: 5573: 5572: 5562: 5556: 5555: 5553: 5552: 5542: 5536: 5535: 5533: 5532: 5522: 5516: 5515: 5513: 5512: 5502: 5496: 5495: 5487: 5481: 5480: 5478: 5477: 5468:. 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1025:student_get_name 1023: 1020: 1017: 1014: 1011: 1008: 1005: 1002: 999: 996: 993: 990: 987: 984: 981: 978: 975: 972: 969: 966: 963: 960: 957: 954: 948:In file main.c: 944: 941: 938: 935: 932: 929: 926: 923: 920: 917: 914: 911: 908: 907:student_get_name 905: 902: 899: 896: 893: 890: 887: 884: 881: 878: 875: 872: 869: 866: 863: 860: 857: 854: 851: 848: 845: 842: 839: 836: 833: 830: 827: 824: 821: 818: 815: 812: 809: 806: 803: 800: 797: 794: 791: 788: 785: 782: 779: 776: 773: 770: 767: 764: 761: 758: 755: 752: 749: 746: 743: 740: 737: 734: 731: 728: 725: 722: 719: 716: 713: 710: 707: 704: 701: 698: 695: 692: 689: 686: 683: 680: 677: 674: 671: 668: 665: 662: 659: 656: 653: 650: 647: 644: 641: 638: 635: 632: 629: 626: 623: 620: 617: 614: 611: 608: 605: 602: 599: 596: 593: 590: 587: 586:<string.h> 584: 581: 580:<stdlib.h> 578: 568: 565: 562: 559: 556: 553: 550: 549:student_get_name 547: 544: 541: 538: 535: 532: 529: 526: 523: 520: 517: 514: 511: 508: 505: 502: 499: 496: 493: 490: 487: 484: 481: 478: 475: 472: 469: 466: 463: 460: 457: 454: 451: 448: 445: 442: 439: 436: 433: 430: 427: 424: 421: 418: 415: 412: 409: 406: 391: 388: 385: 382: 379: 376: 373: 370: 367: 364: 361: 358: 355: 352: 349: 346: 343: 340: 337: 334: 331: 328: 325: 322: 319: 316: 313: 310: 307: 304: 301: 298: 295: 292: 289: 286: 283: 280: 277: 274: 271: 264: 261: 258: 255: 252: 249: 246: 235: 206:cross-validation 182: 178: 167: 163: 156: 152: 148: 144: 140: 136: 18:computer science 5675: 5674: 5670: 5669: 5668: 5666: 5665: 5664: 5650: 5649: 5648: 5647: 5638: 5636: 5628: 5627: 5623: 5614: 5612: 5604: 5603: 5599: 5590: 5588: 5584: 5583: 5579: 5570: 5568: 5564: 5563: 5559: 5550: 5548: 5544: 5543: 5539: 5530: 5528: 5524: 5523: 5519: 5510: 5508: 5504: 5503: 5499: 5488: 5484: 5475: 5473: 5462: 5458: 5453: 5431: 5426: 5425: 5422: 5419: 5416: 5413: 5410: 5407: 5404: 5401: 5398: 5395: 5388: 5384: 5380: 5377: 5376: 5373: 5370: 5367: 5364: 5361: 5358: 5355: 5352: 5349: 5346: 5343: 5340: 5337: 5334: 5331: 5328: 5325: 5322: 5319: 5316: 5313: 5310: 5307: 5304: 5301: 5298: 5295: 5292: 5289: 5286: 5279: 5275: 5272: 5267: 5266: 5263: 5260: 5257: 5254: 5251: 5248: 5245: 5242: 5239: 5236: 5233: 5230: 5227: 5224: 5221: 5218: 5215: 5212: 5209: 5206: 5203: 5200: 5197: 5194: 5191: 5188: 5185: 5182: 5179: 5176: 5173: 5170: 5167: 5162: 5161: 5158: 5154: 5151: 5148: 5145: 5142: 5138: 5135: 5132: 5129: 5124: 5123: 5120: 5117: 5114: 5111: 5108: 5105: 5102: 5099: 5096: 5093: 5090: 5086: 5083: 5080: 5077: 5074: 5071: 5068: 5065: 5062: 5059: 5056: 5053: 5050: 5047: 5044: 5040: 5037: 5034: 5031: 5028: 5025: 5022: 5019: 5016: 5013: 5010: 5007: 5003: 5000: 4997: 4994: 4991: 4986: 4985: 4982: 4979: 4976: 4973: 4970: 4963: 4960: 4959: 4956: 4953: 4950: 4947: 4944: 4937: 4934: 4933: 4930: 4927: 4924: 4921: 4918: 4915: 4912: 4909: 4906: 4903: 4900: 4897: 4894: 4891: 4888: 4885: 4875: 4871: 4864: 4859: 4858: 4855: 4852: 4849: 4846: 4843: 4840: 4838:"Bob" 4837: 4834: 4831: 4828: 4825: 4822: 4819: 4816: 4813: 4810: 4807: 4804: 4801: 4798: 4795: 4792: 4789: 4786: 4783: 4780: 4777: 4771: 4770: 4767: 4764: 4761: 4758: 4755: 4752: 4749: 4747:"Bob" 4746: 4743: 4740: 4737: 4734: 4731: 4728: 4725: 4722: 4719: 4716: 4713: 4710: 4707: 4704: 4701: 4698: 4695: 4692: 4689: 4686: 4683: 4680: 4677: 4674: 4671: 4668: 4665: 4662: 4659: 4656: 4653: 4650: 4647: 4644: 4641: 4638: 4635: 4632: 4629: 4626: 4623: 4620: 4617: 4614: 4611: 4608: 4605: 4602: 4599: 4596: 4586: 4581: 4580: 4577: 4574: 4571: 4568: 4565: 4562: 4559: 4556: 4553: 4550: 4547: 4544: 4541: 4538: 4535: 4532: 4529: 4526: 4523: 4520: 4517: 4514: 4511: 4508: 4505: 4502: 4499: 4496: 4493: 4490: 4488:"Bob" 4487: 4484: 4481: 4478: 4475: 4472: 4469: 4468: 4465: 4462: 4459: 4456: 4453: 4450: 4447: 4444: 4441: 4438: 4435: 4432: 4429: 4426: 4423: 4421:# Setter method 4420: 4417: 4414: 4411: 4408: 4405: 4402: 4399: 4396: 4393: 4390: 4388:# Getter method 4387: 4384: 4381: 4378: 4375: 4372: 4369: 4366: 4363: 4360: 4357: 4354: 4351: 4348: 4345: 4342: 4339: 4336: 4333: 4330: 4327: 4324: 4321: 4315: 4310: 4309: 4306: 4303: 4300: 4297: 4294: 4291: 4288: 4285: 4282: 4279: 4276: 4273: 4270: 4267: 4264: 4261: 4258: 4255: 4252: 4249: 4246: 4243: 4240: 4237: 4234: 4231: 4228: 4225: 4222: 4219: 4216: 4213: 4210: 4207: 4204: 4201: 4198: 4195: 4192: 4189: 4186: 4183: 4180: 4177: 4171:setName('name') 4170: 4166: 4148: 4144: 4141: 4136: 4135: 4132: 4129: 4126: 4123: 4120: 4117: 4114: 4111: 4108: 4105: 4102: 4099: 4096: 4093: 4090: 4087: 4084: 4081: 4078: 4075: 4072: 4069: 4066: 4063: 4060: 4057: 4054: 4051: 4048: 4045: 4035: 4034: 4031: 4028: 4025: 4022: 4019: 4016: 4013: 4010: 4007: 4004: 4001: 3998: 3995: 3992: 3989: 3986: 3983: 3980: 3977: 3971: 3970: 3967: 3964: 3961: 3958: 3955: 3952: 3949: 3946: 3943: 3940: 3937: 3934: 3931: 3928: 3925: 3922: 3919: 3916: 3913: 3910: 3907: 3904: 3901: 3898: 3895: 3892: 3889: 3886: 3883: 3880: 3877: 3874: 3871: 3868: 3865: 3862: 3859: 3856: 3853: 3850: 3847: 3844: 3841: 3838: 3835: 3832: 3827: 3826: 3823: 3820: 3817: 3815:@implementation 3814: 3811: 3808: 3805: 3802: 3799: 3796: 3793: 3790: 3787: 3784: 3781: 3778: 3774: 3771: 3753: 3752: 3749: 3746: 3743: 3740: 3737: 3734: 3731: 3729:@implementation 3728: 3725: 3722: 3719: 3716: 3713: 3710: 3707: 3704: 3701: 3698: 3695: 3692: 3688: 3685: 3667: 3666: 3663: 3660: 3657: 3654: 3651: 3648: 3645: 3642: 3639: 3636: 3633: 3630: 3627: 3624: 3621: 3618: 3615: 3612: 3609: 3606: 3603: 3600: 3597: 3594: 3591: 3588: 3585: 3582: 3579: 3577:@implementation 3576: 3573: 3570: 3567: 3564: 3561: 3558: 3555: 3552: 3549: 3546: 3543: 3540: 3537: 3534: 3531: 3528: 3525: 3522: 3519: 3516: 3513: 3510: 3507: 3504: 3501: 3498: 3494: 3491: 3477: 3472: 3471: 3468: 3465: 3462: 3459: 3456: 3453: 3450: 3447: 3444: 3441: 3438: 3435: 3432: 3429: 3426: 3423: 3420: 3417: 3414: 3411: 3408: 3405: 3402: 3399: 3396: 3393: 3390: 3387: 3384: 3381: 3378: 3375: 3372: 3369: 3366: 3363: 3360: 3357: 3354: 3351: 3348: 3345: 3342: 3339: 3334: 3333: 3330: 3327: 3324: 3321: 3318: 3315: 3312: 3309: 3306: 3303: 3300: 3297: 3294: 3291: 3288: 3285: 3282: 3279: 3276: 3273: 3270: 3267: 3264: 3261: 3258: 3255: 3252: 3249: 3246: 3243: 3240: 3237: 3234: 3231: 3228: 3225: 3222: 3219: 3216: 3213: 3210: 3207: 3204: 3201: 3198: 3195: 3192: 3189: 3186: 3180: 3179: 3176: 3173: 3170: 3167: 3164: 3161: 3158: 3155: 3152: 3149: 3146: 3143: 3140: 3137: 3134: 3131: 3128: 3125: 3122: 3119: 3116: 3113: 3110: 3107: 3104: 3101: 3098: 3095: 3089: 3088: 3085: 3082: 3079: 3076: 3073: 3070: 3067: 3064: 3061: 3058: 3055: 3052: 3049: 3046: 3043: 3040: 3037: 3034: 3031: 3028: 3025: 3022: 3019: 3016: 3013: 3010: 3007: 3004: 3001: 2998: 2995: 2992: 2989: 2986: 2983: 2980: 2977: 2974: 2971: 2968: 2965: 2955: 2954: 2951: 2948: 2945: 2942: 2939: 2936: 2933: 2930: 2927: 2924: 2921: 2918: 2915: 2912: 2909: 2906: 2903: 2900: 2897: 2894: 2891: 2888: 2885: 2882: 2879: 2876: 2873: 2870: 2867: 2864: 2861: 2858: 2855: 2852: 2849: 2846: 2843: 2840: 2837: 2834: 2828: 2827: 2824: 2821: 2818: 2815: 2812: 2809: 2806: 2803: 2800: 2797: 2794: 2791: 2788: 2785: 2782: 2779: 2776: 2773: 2770: 2767: 2764: 2761: 2758: 2755: 2752: 2749: 2746: 2743: 2740: 2737: 2734: 2731: 2728: 2725: 2722: 2719: 2716: 2709: 2706: 2701: 2700: 2697: 2694: 2691: 2688: 2685: 2682: 2679: 2676: 2673: 2670: 2667: 2664: 2661: 2658: 2655: 2652: 2649: 2646: 2643: 2640: 2637: 2634: 2631: 2628: 2625: 2622: 2619: 2616: 2613: 2610: 2607: 2600: 2596: 2582: 2577: 2576: 2573: 2570: 2567: 2564: 2561: 2558: 2555: 2552: 2549: 2546: 2543: 2540: 2537: 2534: 2531: 2528: 2525: 2522: 2519: 2516: 2513: 2510: 2507: 2504: 2501: 2498: 2495: 2492: 2489: 2486: 2483: 2480: 2477: 2474: 2471: 2468: 2465: 2462: 2459: 2456: 2453: 2450: 2447: 2444: 2441: 2438: 2435: 2432: 2429: 2426: 2423: 2420: 2417: 2414: 2411: 2408: 2405: 2399: 2394: 2393: 2390: 2387: 2384: 2381: 2378: 2375: 2372: 2369: 2366: 2363: 2360: 2357: 2354: 2351: 2348: 2345: 2342: 2339: 2336: 2333: 2330: 2323: 2320: 2319: 2316: 2313: 2310: 2307: 2304: 2301: 2298: 2295: 2292: 2289: 2286: 2283: 2280: 2277: 2274: 2271: 2268: 2265: 2262: 2259: 2256: 2253: 2250: 2247: 2244: 2241: 2238: 2235: 2232: 2229: 2226: 2223: 2220: 2217: 2214: 2211: 2208: 2201: 2195: 2190: 2189: 2186: 2183: 2180: 2177: 2174: 2171: 2168: 2165: 2162: 2159: 2156: 2153: 2150: 2147: 2144: 2141: 2138: 2135: 2132: 2129: 2126: 2123: 2120: 2117: 2114: 2111: 2108: 2105: 2102: 2099: 2096: 2093: 2090: 2087: 2084: 2081: 2078: 2075: 2072: 2069: 2066: 2063: 2060: 2057: 2054: 2051: 2048: 2045: 2042: 2039: 2036: 2033: 2030: 2027: 2024: 2021: 2018: 2015: 2012: 2009: 2006: 2003: 2000: 1997: 1994: 1991: 1988: 1985: 1982: 1979: 1976: 1973: 1970: 1967: 1964: 1961: 1958: 1955: 1952: 1949: 1946: 1943: 1940: 1937: 1934: 1931: 1928: 1925: 1922: 1919: 1916: 1913: 1910: 1907: 1904: 1901: 1898: 1895: 1892: 1889: 1886: 1883: 1873: 1862: 1858: 1854: 1850: 1846: 1842: 1838: 1831: 1826: 1825: 1822: 1819: 1816: 1813: 1810: 1807: 1804: 1801: 1798: 1795: 1792: 1789: 1786: 1783: 1780: 1773: 1769: 1766: 1765: 1762: 1759: 1756: 1753: 1750: 1747: 1744: 1741: 1738: 1735: 1732: 1729: 1726: 1723: 1716: 1713: 1712: 1709: 1706: 1703: 1700: 1697: 1694: 1691: 1688: 1685: 1682: 1679: 1676: 1673: 1670: 1667: 1664: 1661: 1658: 1655: 1652: 1649: 1646: 1643: 1640: 1637: 1634: 1631: 1628: 1625: 1622: 1615: 1600: 1595: 1594: 1591: 1588: 1585: 1582: 1579: 1576: 1573: 1570: 1567: 1564: 1561: 1558: 1555: 1552: 1549: 1546: 1543: 1540: 1537: 1534: 1531: 1528: 1525: 1522: 1519: 1516: 1513: 1510: 1507: 1504: 1501: 1498: 1495: 1492: 1489: 1486: 1483: 1480: 1477: 1474: 1471: 1468: 1465: 1462: 1459: 1456: 1453: 1450: 1447: 1444: 1441: 1438: 1435: 1429: 1428: 1425: 1422: 1419: 1416: 1413: 1410: 1407: 1404: 1401: 1398: 1395: 1392: 1389: 1386: 1383: 1380: 1377: 1374: 1371: 1368: 1365: 1362: 1359: 1356: 1353: 1350: 1347: 1344: 1341: 1338: 1335: 1332: 1329: 1326: 1323: 1320: 1317: 1314: 1311: 1308: 1305: 1302: 1299: 1296: 1293: 1290: 1284: 1279: 1278: 1275: 1272: 1268: 1265: 1261: 1258: 1255: 1251: 1248: 1245: 1241: 1238: 1235: 1232: 1228: 1225: 1221: 1218: 1215: 1211: 1208: 1205: 1201: 1197: 1193: 1190: 1187: 1181: 1180: 1177: 1174: 1171: 1168: 1165: 1162: 1159: 1156: 1153: 1150: 1147: 1144: 1141: 1138: 1135: 1132: 1129: 1126: 1123: 1120: 1117: 1115:student_get_age 1114: 1111: 1108: 1105: 1102: 1099: 1096: 1093: 1090: 1088:student_set_age 1087: 1084: 1081: 1078: 1075: 1072: 1069: 1066: 1063: 1060: 1057: 1054: 1051: 1048: 1046:student_get_age 1045: 1042: 1039: 1036: 1033: 1030: 1027: 1024: 1021: 1018: 1015: 1012: 1009: 1006: 1003: 1000: 997: 994: 991: 988: 985: 982: 979: 976: 973: 970: 967: 964: 961: 958: 956:<stdio.h> 955: 952: 946: 945: 942: 939: 936: 933: 930: 927: 924: 921: 918: 915: 912: 909: 906: 903: 900: 897: 894: 891: 888: 885: 882: 879: 876: 873: 870: 867: 864: 862:student_get_age 861: 858: 855: 852: 849: 846: 843: 840: 837: 834: 831: 828: 825: 822: 819: 816: 813: 810: 808:student_set_age 807: 804: 801: 798: 795: 792: 789: 786: 783: 780: 777: 774: 771: 768: 765: 762: 759: 756: 753: 750: 747: 744: 741: 738: 735: 732: 729: 726: 723: 720: 717: 714: 711: 708: 705: 702: 699: 696: 693: 690: 687: 684: 681: 678: 675: 672: 669: 666: 663: 660: 657: 654: 651: 648: 645: 642: 639: 636: 633: 630: 627: 624: 621: 618: 615: 612: 609: 606: 603: 600: 597: 594: 591: 588: 585: 582: 579: 576: 570: 569: 566: 563: 560: 557: 554: 551: 548: 545: 542: 539: 536: 533: 530: 527: 525:student_get_age 524: 521: 518: 515: 512: 509: 506: 503: 500: 497: 495:student_set_age 494: 491: 488: 485: 482: 479: 476: 473: 470: 467: 464: 461: 458: 455: 452: 449: 446: 443: 440: 437: 434: 431: 428: 425: 422: 419: 416: 413: 410: 407: 404: 398: 393: 392: 389: 387:student_set_age 386: 383: 380: 377: 374: 371: 368: 365: 362: 359: 356: 353: 350: 347: 344: 341: 338: 335: 332: 329: 326: 323: 321:student_set_age 320: 317: 315:student_get_age 314: 311: 308: 305: 302: 299: 296: 293: 290: 287: 284: 281: 278: 275: 273:student_get_age 272: 269: 266: 265: 262: 259: 256: 253: 250: 247: 244: 241: 229: 180: 176: 165: 161: 154: 150: 146: 142: 138: 134: 107: 62:member variable 12: 11: 5: 5673: 5663: 5662: 5646: 5645: 5621: 5597: 5577: 5557: 5537: 5517: 5497: 5482: 5455: 5454: 5452: 5449: 5448: 5447: 5442: 5437: 5430: 5427: 5394: 5285: 5271: 5268: 5169: 5166: 5163: 5131: 5128: 5125: 4993: 4990: 4987: 4969: 4943: 4884: 4863: 4860: 4776: 4595: 4585: 4582: 4471: 4320: 4314: 4311: 4176: 4140: 4137: 4073:'name' 4044: 4037:Or, using the 3976: 3834: 3831: 3828: 3770: 3763:, while using 3684: 3490: 3476: 3473: 3341: 3338: 3335: 3247:'name' 3229:defineProperty 3185: 3094: 2964: 2916:'name' 2877:'name' 2833: 2715: 2705: 2702: 2606: 2581: 2578: 2514:implementation 2404: 2398: 2395: 2329: 2207: 2194: 2191: 1974:student-number 1882: 1830: 1827: 1779: 1722: 1621: 1599: 1596: 1434: 1300:<string> 1289: 1283: 1280: 1186: 1157:student_delete 951: 751:student_delete 575: 474:student_delete 403: 397: 394: 268: 243: 240: 237: 228: 225: 210:data integrity 106: 103: 22:mutator method 9: 6: 4: 3: 2: 5672: 5661: 5658: 5657: 5655: 5635: 5631: 5625: 5611: 5607: 5601: 5587: 5586:"The D Style" 5581: 5567: 5561: 5547: 5541: 5527: 5521: 5507: 5501: 5493: 5486: 5472:on 2011-05-13 5471: 5467: 5460: 5456: 5446: 5443: 5441: 5438: 5436: 5433: 5432: 5392: 5283: 4977:attr_accessor 4967: 4941: 4882: 4879: 4876:attr_accessor 4869: 4774: 4657:define/public 4636:define/public 4593: 4591: 4563:>>> 4542:>>> 4527:>>> 4509:>>> 4494:>>> 4473:>>> 4331:# Initializer 4318: 4174: 4164: 4161: 4157: 4152: 4100:'Str' 4042: 4040: 3974: 3768: 3766: 3762: 3758: 3682: 3680: 3676: 3672: 3671:Mac OS X 10.6 3488: 3486: 3482: 3183: 3092: 2962: 2960: 2831: 2713: 2604: 2601:setName(name) 2594: 2591: 2587: 2402: 2327: 2205: 2199: 1880: 1877: 1871: 1866: 1836: 1777: 1720: 1619: 1613: 1609: 1605: 1432: 1287: 1184: 949: 573: 401: 236: 234: 224: 222: 217: 215: 211: 207: 202: 197: 194: 190: 186: 174: 169: 158: 132: 128: 123: 120: 116: 112: 102: 100: 96: 91: 89: 84: 82: 77: 72: 70: 67: 63: 58: 54: 50: 49:encapsulation 46: 41: 39: 35: 31: 27: 23: 19: 5637:. Retrieved 5633: 5624: 5613:. Retrieved 5609: 5600: 5589:. Retrieved 5580: 5569:. Retrieved 5560: 5549:. Retrieved 5540: 5529:. Retrieved 5520: 5509:. Retrieved 5500: 5485: 5474:. Retrieved 5470:the original 5459: 5378: 5273: 5198:"" 4961: 4935: 4880: 4865: 4847:student-name 4772: 4587: 4316: 4162: 4153: 4142: 4088:'rw' 4036: 4017:mk_accessors 3972: 3754: 3668: 3485:Ubuntu 12.04 3478: 3181: 3090: 2956: 2829: 2707: 2592: 2583: 2400: 2373:student_name 2321: 2196: 1917:student-name 1911:"" 1878: 1867: 1832: 1767: 1714: 1601: 1430: 1285: 1182: 947: 571: 399: 230: 218: 200: 198: 170: 159: 124: 108: 105:Implications 92: 85: 73: 42: 37: 33: 29: 21: 15: 5634:www.php.net 4951:attr_reader 4872:attr_reader 3999:__PACKAGE__ 3735:@synthesize 3475:Objective-C 2603:" methods. 2204:attribute. 2052:student-age 1995:student-age 1829:Common Lisp 995:student_new 634:student_new 444:student_new 375:student.age 309:student.age 179:and Ruby's 173:boilerplate 168:parameter. 5639:2021-07-06 5615:2021-07-06 5591:2013-02-01 5571:2013-01-13 5551:2011-03-29 5531:2011-03-29 5511:2011-03-29 5476:2009-10-19 5451:References 5282:methods. 4624:init-field 3772:@interface 3686:@interface 3492:@interface 2704:JavaScript 2172:new-number 2169:check-type 2148:new-number 2079:with-slots 1935::birthdate 1863:slot-value 1859:slot-value 1855:with-slots 1608:properties 189:maintained 131:validation 119:visibility 88:properties 81:developers 66:assignment 5157:) 5127:Smalltalk 4966:variable 4940:variable 4802:#:mutable 4744:set-name! 4690:super-new 4663:set-name! 4391:@property 4298:$ newName 4271:$ newName 4173:methods. 4167:getName() 3788:nonatomic 3782:@property 3757:OS X 10.8 3702:nonatomic 3696:@property 3241:prototype 3008:prototype 2597:getName() 2517:procedure 2439:procedure 2406:interface 2269:@property 2266:// Setter 2233:@property 2230:// Getter 2202:@property 2136:defmethod 2100:birthdate 2085:birthdate 2043:defmethod 1992:defmethod 1965::initform 1938::initform 1929:birthdate 1914::accessor 1908::initform 1874::accessor 1847::accessor 162:getAmount 76:reference 53:variables 38:accessors 5654:Category 5429:See also 5408:Property 5368:Property 5311:Property 5255:newValue 5146:between: 5072:name_mut 4762:get-name 4726:get-name 4711:student% 4681:new-name 4666:new-name 4642:get-name 4609:student% 4466:new_name 4448:new_name 4337:__init__ 4259:function 4211:function 4160:variable 4023:qw(name) 3923:get_name 3872:set_name 3800:NSString 3779:NSObject 3777: : 3714:NSString 3693:NSObject 3691: : 3634:NSString 3628:setName: 3589:NSString 3559:NSString 3553:setName: 3526:NSString 3505:NSString 3499:NSObject 3497: : 3418:function 3382:function 3295:function 3262:function 3187:function 2966:function 2922:function 2883:function 2835:function 2795:function 2762:function 2717:function 2590:variable 2520:TStudent 2478:property 2412:TStudent 1959::initarg 1932::initarg 1902::initarg 1887:defclass 1876:option. 1606:idea of 1436:#include 1297:#include 959:#include 953:#include 589:#include 583:#include 577:#include 239:Assembly 227:Examples 166:currency 155:setMonth 111:property 95:validate 5402:Student 5296:Private 5293:Student 5180:private 5174:Student 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Index

computer science
method
object-oriented programming
encapsulation
variables
class
member variable
assignment
operator overloading
reference
developers
properties
validate
event
property
instance variable
visibility
block
validation
boilerplate
system designs progress
maintained
demands on the data
cross-validation
data integrity
bugs
inlined

C#
properties

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