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iOS Objective-C Basics (Retired) Foundation Framework NSArray

Taylor Weeks
Taylor Weeks
4,009 Points
Posted by Taylor Weeks
Taylor Weeks
4,009 Points

[[NSArray alloc] init]

In this video, we replace the alloc init line and replace it with an array literal (@[@"f", @"o", @"o"]). Is there a difference between these two ways to declare variables? If so, when do we use each of them?

2 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

that creates an array literal. they do the same thing, its just using the literal is faster (think of it like a shorthand version). if I used

NSArray *someArray = @[@"abc", @"cde"];

versus

NSArray *someArray = [[NSArray alloc] initWithObjects:@"abc", @"cde", nil];

both accomplish the same thing. You can use either one. However the first is faster and easier. Youve been using literal syntax all along when you create a string using @"some string"

Taylor Weeks
Taylor Weeks
4,009 Points
Taylor Weeks
Taylor Weeks
4,009 Points

You answered my question perfectly. Thank you.