{"id":22319,"date":"2025-05-27T16:15:16","date_gmt":"2025-05-27T13:15:16","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/rustta-akilli-isaretciler-box-rc-ve-refcell\/"},"modified":"2025-05-27T16:15:16","modified_gmt":"2025-05-27T13:15:16","slug":"rustta-akilli-isaretciler-box-rc-ve-refcell","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/rustta-akilli-isaretciler-box-rc-ve-refcell\/","title":{"rendered":"Rust&#8217;ta Ak\u0131ll\u0131 \u0130\u015faret\u00e7iler: Box, Rc ve RefCell"},"content":{"rendered":"<p><body><\/p>\n<p>Rust&#8217;ta Ak\u0131ll\u0131 \u0130\u015faret\u00e7iler: Box, Rc ve RefCell<\/p>\n<p>Rust, bellek g\u00fcvenli\u011fini sa\u011flamak i\u00e7in sahip oldu\u011fu g\u00fc\u00e7l\u00fc bellek y\u00f6netim sistemi ile bilinir. Ancak, bazen geleneksel y\u0131\u011f\u0131n (stack) belle\u011fi yetersiz kalabilir.  \u0130\u015fte bu noktada ak\u0131ll\u0131 i\u015faret\u00e7iler devreye girer.  Ak\u0131ll\u0131 i\u015faret\u00e7iler, belle\u011fin otomatik olarak y\u00f6netilmesini sa\u011flar ve bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler.  Bu makalede, Rust&#8217;taki en yayg\u0131n ak\u0131ll\u0131 i\u015faret\u00e7ilerden \u00fc\u00e7\u00fcn\u00fc \u2013 Box, Rc ve RefCell \u2013 detayl\u0131 bir \u015fekilde inceleyece\u011fiz.  \u00d6ncelikle, her bir i\u015faret\u00e7i t\u00fcr\u00fcn\u00fcn ne i\u015fe yarad\u0131\u011f\u0131n\u0131 ve nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ele alaca\u011f\u0131z, daha sonra da \u00f6rneklerle peki\u015ftirece\u011fiz. <\/p>\n<h2>Box: Y\u0131\u011f\u0131n (Stack) Belle\u011finden \u00d6bek (Heap) Belle\u011fine Ta\u015f\u0131nma<\/h2>\n<p>Box, bir de\u011feri y\u0131\u011f\u0131n bellekten \u00f6bek belle\u011fe ta\u015f\u0131mak i\u00e7in kullan\u0131l\u0131r.  Yani, b\u00fcy\u00fck veya dinamik boyutlu verileri saklamak i\u00e7in idealdir.  Box ile olu\u015fturulan de\u011fi\u015fkenler, program\u0131n sonuna kadar \u00f6bek bellekte kal\u0131r ve manuel olarak serbest b\u0131rak\u0131lmas\u0131na gerek yoktur.  Box, tek sahiplilik prensibine uyar.  Bir de\u011fi\u015fken sadece bir Box&#8217;ta bulunabilir.  Bu sayede bellek y\u00f6netimi \u00e7ok daha kolay ve g\u00fcvenli hale gelir. <\/p>\n<pre><code class=\"language-rust\">\nlet x = 5;             \/\/ x y\u0131\u011f\u0131nda\nlet y = Box::new(5);   \/\/ y \u00f6bek bellekte\n<\/code><\/pre>\n<p>Yukar\u0131daki \u00f6rnekte, <code>x<\/code> de\u011fi\u015fkeni y\u0131\u011f\u0131n bellekte saklan\u0131rken, <code>y<\/code> de\u011fi\u015fkeni \u00f6bek belle\u011fe yerle\u015ftirilir.  Box, \u00f6bek belle\u011findeki verilerin otomatik olarak temizlenmesini sa\u011flar.  \u00d6bek belle\u011fi, program\u0131n \u00e7al\u0131\u015fma zaman\u0131nda dinamik olarak tahsis edilen bir bellek alan\u0131d\u0131r.  Bu nedenle Box, b\u00fcy\u00fck veri yap\u0131lar\u0131 i\u00e7in olduk\u00e7a kullan\u0131\u015fl\u0131d\u0131r.  Daha fazla detay i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">web sitemi<\/a> ziyaret edebilirsiniz.<\/p>\n<h2>Rc (Reference Counted): \u00c7oklu Sahiplik<\/h2>\n<p>Rc (Reference Counted), bir de\u011ferin birden fazla sahibi olmas\u0131n\u0131 sa\u011flar.  Bir de\u011ferin ka\u00e7 tane referans\u0131 oldu\u011funu takip eder ve referans say\u0131s\u0131 s\u0131f\u0131ra d\u00fc\u015ft\u00fc\u011f\u00fcnde belle\u011fi otomatik olarak serbest b\u0131rak\u0131r.  Bu, payla\u015f\u0131m gerektiren durumlarda olduk\u00e7a kullan\u0131\u015fl\u0131d\u0131r.  Ancak, dikkat edilmesi gereken bir nokta var: Rc, yaln\u0131zca payla\u015f\u0131lan verilerin *de\u011fi\u015ftirilemez* olmas\u0131 ko\u015fuluyla g\u00fcvenlidir.  De\u011fi\u015ftirilebilir veriler i\u00e7in RefCell kullanmak gerekir.<\/p>\n<pre><code class=\"language-rust\">\nuse std::rc::Rc;\n\nlet a = Rc::new(5);\nlet b = a.clone(); \/\/ b, a ile ayn\u0131 de\u011feri i\u015faret eder.\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>a<\/code> ve <code>b<\/code> de\u011fi\u015fkenleri ayn\u0131 de\u011feri i\u015faret eder.  Rc, her iki de\u011fi\u015fkenin de de\u011feri referans etti\u011fini takip eder.  <code>a<\/code> ve <code>b<\/code> bellekten temizlendi\u011finde referans say\u0131s\u0131 s\u0131f\u0131ra iner ve bellek serbest b\u0131rak\u0131l\u0131r.  Bu durum, verimlili\u011fi art\u0131r\u0131r ve bellek y\u00f6netimini basitle\u015ftirir.<\/p>\n<h2>RefCell: De\u011fi\u015ftirilebilir Veriler \u0130\u00e7in \u00c7oklu Sahiplik<\/h2>\n<p>Rc ile \u00e7al\u0131\u015f\u0131rken, payla\u015f\u0131lan veriler de\u011fi\u015ftirilemez.  E\u011fer de\u011fi\u015ftirilebilir veriler payla\u015f\u0131lmak isteniyorsa, RefCell kullan\u0131lmal\u0131d\u0131r.  RefCell, \u00e7al\u0131\u015fma zaman\u0131nda (runtime) bor\u00e7 verme (borrowing) sistemini kullan\u0131r.  Bu da demek oluyor ki, verileri de\u011fi\u015ftirmek i\u00e7in bir *mutlu* referansa sahip olman\u0131z gerekir.  Ancak, birden fazla mutable referans ayn\u0131 anda mevcut olamaz; aksi takdirde panic olu\u015fur. Bu, veri b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc sa\u011flar.  RefCell, Rc gibi birden fazla sahipli\u011fi destekler, ancak mutable referans y\u00f6netimi i\u00e7in daha s\u0131k\u0131 kurallara sahiptir.<\/p>\n<pre><code class=\"language-rust\">\nuse std::rc::Rc;\nuse std::cell::RefCell;\n\nlet a = Rc::new(RefCell::new(5));\n{\n    let mut b = a.borrow_mut();\n    *b += 1;\n}\n<\/code><\/pre>\n<p>Bu kod par\u00e7as\u0131nda, <code>a<\/code> de\u011fi\u015fkeni <code>Rc<\/code> ile sar\u0131lan <code>RefCell<\/code>&#8216;\u0131 i\u00e7erir.  <code>borrow_mut()<\/code> fonksiyonu, mutable bir referans sa\u011flar ve de\u011feri de\u011fi\u015ftirmemize olanak tan\u0131r.  <code>borrow_mut()<\/code>&#8216;\u0131n kapsam\u0131 bitti\u011finde, mutable referans serbest b\u0131rak\u0131l\u0131r.  Bu y\u00f6ntem, \u00e7oklu sahiplik ve veri de\u011fi\u015ftirilebilirli\u011fini bir arada kullanmay\u0131 m\u00fcmk\u00fcn k\u0131lar.  Ancak dikkatli kullan\u0131lmal\u0131d\u0131r, \u00e7\u00fcnk\u00fc yanl\u0131\u015f kullan\u0131m panic&#8217;e neden olabilir.<\/p>\n<p>Sonu\u00e7 olarak, Box, Rc ve RefCell, Rust programlama dilinde bellek y\u00f6netimini kolayla\u015ft\u0131ran g\u00fc\u00e7l\u00fc ara\u00e7lard\u0131r.  Uygun kullan\u0131m senaryolar\u0131na g\u00f6re se\u00e7ildiklerinde, bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nleyerek daha g\u00fcvenilir ve performansl\u0131 programlar yaz\u0131lmas\u0131n\u0131 sa\u011flarlar.  Bu \u00fc\u00e7 ak\u0131ll\u0131 i\u015faret\u00e7iyi do\u011fru kullanarak,  Rust&#8217;\u0131n g\u00fcvenli ve performansl\u0131 bellek y\u00f6netimi sisteminin avantajlar\u0131ndan tam olarak yararlanabilirsiniz. <\/p>\n<p>Daha fazla bilgi ve \u00f6rnekler i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">web sitemi<\/a>ni ziyaret edebilirsiniz.<\/p>\n<h3>#Etiketler<\/h3>\n<p>#Rust #Ak\u0131ll\u0131\u0130\u015faret\u00e7iler #Box #Rc #RefCell #BellekY\u00f6netimi #Programlama #Yaz\u0131l\u0131mGeli\u015ftirme #\u00c7okluSahiplik #\u00d6bekBelle\u011fi #Y\u0131\u011f\u0131nBelle\u011fi<\/p>\n<p><\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Rust&#8217;ta Ak\u0131ll\u0131 \u0130\u015faret\u00e7iler: Box, Rc ve RefCell Rust, bellek g\u00fcvenli\u011fini sa\u011flamak i\u00e7in sahip oldu\u011fu g\u00fc\u00e7l\u00fc bellek y\u00f6netim sistemi&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-22319","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Rust&#039;ta Ak\u0131ll\u0131 \u0130\u015faret\u00e7iler: Box, Rc ve RefCell<\/title>\n<meta name=\"description\" content=\"Rust, bellek g\u00fcvenli\u011fini sa\u011flamak i\u00e7in sahip oldu\u011fu g\u00fc\u00e7l\u00fc bellek y\u00f6netim sistemi ile bilinir. Ancak, bazen geleneksel y\u0131\u011f\u0131n (stack) belle\u011fi yetersiz kalabilir. \u0130\u015fte bu noktada ak\u0131ll\u0131 i\u015faret\u00e7iler devreye girer. Ak\u0131ll\u0131 i\u015faret\u00e7iler, belle\u011fin otomatik olarak y\u00f6netilmesini sa\u011flar ve bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler. Bu makalede, Rust&#039;taki en yayg\u0131n ak\u0131ll\u0131 i\u015faret\u00e7ilerden \u00fc\u00e7\u00fcn\u00fc \u2013 Box, Rc ve RefCell \u2013 detayl\u0131 bir \u015fekilde inceleyece\u011fiz. \u00d6ncelikle, her bir i\u015faret\u00e7i t\u00fcr\u00fcn\u00fcn ne i\u015fe yarad\u0131\u011f\u0131n\u0131 ve nas\u0131l kullan\u0131ld\u0131\u011f\u0131n\u0131 ele alaca\u011f\u0131z, daha sonra da \u00f6rneklerle peki\u015ftirece\u011fiz.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/rustta-akilli-isaretciler-box-rc-ve-refcell\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rust&#039;ta Ak\u0131ll\u0131 \u0130\u015faret\u00e7iler: Box, Rc ve RefCell\" \/>\n<meta property=\"og:description\" content=\"Rust, bellek g\u00fcvenli\u011fini sa\u011flamak i\u00e7in sahip oldu\u011fu g\u00fc\u00e7l\u00fc bellek y\u00f6netim sistemi ile bilinir. Ancak, bazen geleneksel y\u0131\u011f\u0131n (stack) belle\u011fi yetersiz kalabilir. \u0130\u015fte bu noktada ak\u0131ll\u0131 i\u015faret\u00e7iler devreye girer. Ak\u0131ll\u0131 i\u015faret\u00e7iler, belle\u011fin otomatik olarak y\u00f6netilmesini sa\u011flar ve bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler. 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Ancak, bazen geleneksel y\u0131\u011f\u0131n (stack) belle\u011fi yetersiz kalabilir. \u0130\u015fte bu noktada ak\u0131ll\u0131 i\u015faret\u00e7iler devreye girer. Ak\u0131ll\u0131 i\u015faret\u00e7iler, belle\u011fin otomatik olarak y\u00f6netilmesini sa\u011flar ve bellek s\u0131z\u0131nt\u0131lar\u0131n\u0131 \u00f6nler. 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