iphone - what is diffrence in this code with mainbundle and without? -


hello see new code me ,like push 

tw *obj =[[tw alloc]initwithnibname:@"tw" bundle:[nsbundle mainbundle]];

normally write code this

tw *obj =[[tw alloc]initwithnibname:@"tw" bundle:nil];

what difference in bundle ?

there no difference in case.

passing nil initwithnibname:bundle: has special meaning. if parameter nil, means implementation should use [nsbundle mainbundle].


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