All Objective-C related Questions

i am starting code with ios swift and objective c . so i want to know any debug function there which give full structure of variable like its type and length of char of string etc.. i mean meta data about the variable . i can say like var_dump in php , i am finding like var_dump in ios swift or objective c code.

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could not load any Objective-C class information. This will significantly reduce the quality of type information available. .h file application crash

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here crash at warning that comparison between pointer and integer ('NSInteger' and 'void *' ) here nil is not means simply 0 i tried NULL instead nil but same warning

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initialisation on selecting the picker view . application crash i can see warning at code . comparison between pointer and integer ('int *' and int)

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how to sort NSArray ascending order or descending order in objective c ?

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how to generate random alphanumeric string in objective c . working with iOS app . library or any peace of code , which help to create random alphanumeric string in objective c

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i have multiple NSString which is dynamic input from app. need to concat multiple NSString in one String in objective c .

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it seems #import and #include both do same job , #import and #include both do include header file . so why one made two function do the same work. so is there any difference between #import and #include ? or #import and #include are same .

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Hi i know the PHP very well but learning the Objective C in ios and want to know if function related to generate random no as we do in php with rand() what is function in Objective C for generating random Number ?

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Hi i want to do some animation in objective c - ios . so pls help me suggest some libarary or something so i can start with .

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i get error :: "Editor placeholder in source file " with dequeueReusableCell with

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