{"id":25007,"date":"2022-05-16T09:24:00","date_gmt":"2022-05-16T09:24:00","guid":{"rendered":"https:\/\/www.gencayyildiz.com\/blog\/?p=25007"},"modified":"2022-05-16T09:24:00","modified_gmt":"2022-05-16T09:24:00","slug":"c-10-record-structs","status":"publish","type":"post","link":"https:\/\/www.gencayyildiz.com\/blog\/c-10-record-structs\/","title":{"rendered":"C# 10 – Record Structs"},"content":{"rendered":"
<\/div>\n

Merhaba,<\/p>\n

Bu i\u00e7eri\u011fimizde C# 9.0 ile hayat\u0131m\u0131za giren record<\/a> yap\u0131s\u0131n\u0131n C# 10 ile gelen record structs<\/strong> isimli yeni \u00f6zelli\u011fi \u00fczerine incelemede bulunuyor olaca\u011f\u0131z.<\/p>\n

Her \u015feyden \u00f6nce record yap\u0131s\u0131n\u0131n ne oldu\u011funu hat\u0131rlatan girizg\u00e2hla ba\u015flayal\u0131m. Record’lar; verisel olarak de\u011feri \u00f6n planda tutan, de\u011ferleri de\u011fi\u015ftirilemeyen ve compile neticesinde IEquatable<T><\/code>‘\u0131 implemente ederek \u00f6z\u00fcnde bir s\u0131n\u0131fa d\u00f6n\u00fc\u015fen referans t\u00fcrl\u00fc veri yap\u0131lar\u0131d\u0131r. Record’lar\u0131n ne oldu\u011funu tam teferruatl\u0131 anlayabilmek i\u00e7in \u00f6nceden klavyeye ald\u0131\u011f\u0131m C# 9.0 \u2013 Records \u0130le Immutable Datalar<\/a> ba\u015fl\u0131kl\u0131 makalemi ba\u015ftan sona okuman\u0131z\u0131 ve ard\u0131ndan bu i\u00e7eri\u011fe g\u00f6z atman\u0131z\u0131 tavsiye ederim.<\/p>\n

Record struct nedir?<\/strong> diye sorarsan\u0131z e\u011fer; record’\u0131n bir\u00e7ok avantaj\u0131n\u0131 sa\u011flayan lakin de\u011fer t\u00fcrl\u00fc olmas\u0131 gibi radikal farklar\u0131 olan veri yap\u0131lar\u0131d\u0131r. \u015eimdi gelin record struct’\u0131n ne oldu\u011fu, record’lardan farklar\u0131n\u0131n neler oldu\u011fu \u015feklinde sualleri tek tek irdeleyerek cevap bulmaya \u00e7al\u0131\u015fal\u0131m.<\/p>\n

Record Struct Nas\u0131l Olu\u015fturulur?<\/h3>\n

Record struct’lar aynen bir struct gibi bir record gibi a\u015fa\u011f\u0131daki semantikte olu\u015fturulmaktad\u0131rlar.<\/p>\n

Prototip :<\/p>\n

\n
\r\nrecord struct [name]\r\n{\r\n    ...\r\n}\r\n<\/pre>\n<\/div>\n
Misal olarak bir ‘Product’ record struct’\u0131 a\u015fa\u011f\u0131daki gibi olu\u015fturulabilmektedir.<\/p>\n
\n
\r\nrecord struct Product\r\n{\r\n    ...\r\n}\r\n<\/pre>\n<\/div>\n
E\u011fer ki ‘Product’ record olu\u015fturmak isteseydik a\u015fa\u011f\u0131da g\u00f6r\u00fcld\u00fc\u011f\u00fc \u00fczere bunun \u00e7ok fazla semantik bir fark\u0131 bulunmayacakt\u0131 :<\/p>\n
\n
\r\nrecord Product\r\n{\r\n    ...\r\n}\r\n<\/pre>\n<\/div>\n
Tabi haz\u0131r laf\u0131 ge\u00e7mi\u015fken s\u00f6ylemekte fayda var ki, C# 9.0 ile gelen bu record [name]<\/code> yap\u0131lanmas\u0131 C# 10 ile record class [name]<\/code> olarak da tan\u0131mlanabilmektedir.<\/p>\n
\n
\r\nrecord class Product\r\n{\r\n    ...\r\n}\r\n<\/pre>\n<\/div>\n
Bu tan\u0131mlama nihai olarak record ile record struct aras\u0131ndaki kar\u0131\u015f\u0131kl\u0131l\u0131\u011f\u0131 \u00f6nlemek i\u00e7in zahiren daha uygun bir g\u00f6rsellik sa\u011flamaktad\u0131r kanaatindeyim. Siz ne d\u00fc\u015f\u00fcn\u00fcyorsunuz?<\/p>\n
Velhas\u0131l,<\/p>\n
Nas\u0131l ki bir record(ya da record class) t\u00fcm s\u0131n\u0131f \u00f6zelliklerine sahip olan bir s\u0131n\u0131fsa ayn\u0131 mant\u0131kta bir record struct’ta \u00f6z\u00fcnde yine bir struct olan ve struct’lar\u0131n t\u00fcm \u00f6zelliklerine sahip olan yap\u0131lanmad\u0131r.<\/p>\n
Bu iki record yap\u0131lanmas\u0131n\u0131n aralar\u0131nda benzerlikleri oldu\u011fu gibi davran\u0131\u015fsal olarak temel farklar\u0131 da mevcuttur. \u015eimdi gelin bu iki yap\u0131y\u0131 tek tek \u00f6zellikler \u00e7er\u00e7evesinde mukayese ederek farklar\u0131n\u0131 ve benzerliklerini inceleyelim.<\/p>\n