===== NSString =====
The NSString class declares the programmatic interface for an object that manages immutable strings.\\
NSString is implemented to represent an array of Unicode characters, in other words, a text string.\\

[[objective-c:foundation.framework:nsstring.h:caseinsensitivecompare|caseinsensitivecompare]]\\
[[objective-c:foundation.framework:nsstring.h:isequaltostring|isequaltostring]]\\
[[objective-c:foundation.framework:nsstring.h:lowercasestring|lowercasestring]]\\
[[objective-c:foundation.framework:nsstring.h:stringbyappendingformat|stringbyappendingformat]]\\
[[objective-c:foundation.framework:nsstring.h:stringbyappendingstring|stringbyappendingstring]]\\
[[objective-c:foundation.framework:nsstring.h:stringwithformat|stringwithformat]]\\
[[objective-c:foundation.framework:nsstring.h:uppercasestring|uppercasestring]]\\