CODEWITHSUNDEEP
objective-c
Junior Bill gates
Junior Bill gates

Reputation: 1866

nsstring in objective c

i am a beginer in objective c.i found the following line in code and is not able to understand what it does it do, as storeselect has not been used anywhere in the code.

NSString *storeSelect=@"";

Upvotes: 1

Views: 232

Answers (4)

Saurabh
Saurabh

Reputation: 22873

NSString *storeSelect=@"Hello World";

is a shortcut of - 

NSString *str = [NSString stringWithCString:"Hello World"];

as "stringWithCString" is convenience method it will be automatically adds autoreleased.

Upvotes: 1

igorgue
igorgue

Reputation: 18242

It's just assigning an empty string to a variable named storeSelect. The @"" is for constant strings.

Upvotes: 1

Peter Štibraný
Peter Štibraný

Reputation: 32893

Objective-C builds on C language. In C, quotes are placed around string literals, i.e. "hello". To distinguish NSString and C strings (char pointers, char *), Objective-C uses @ in front of strings, so @"" is simply empty NSString. If there was no @, it would be empty C string, e.g. char *myString = "hello world";.

Upvotes: 2

justin
justin

Reputation: 104698

storeSelect is the name of a variable whose type is NSString *, with the value assigned to @""

Upvotes: 1

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