Objective C - Read plaintext multicolumn file into several column arrays

I have s开发者_如何转开发een several threads about file handling in Objective C but can't find a simple systematic way to do this: let's say you have a multicolumn data files where each x y z ... columns are separated by tabs. What I want to do is just converting each column to a specific array. I have almost no experience with Objective C but I do know C++.

Thank you in advance.

Use a NSString method to do this after reading it with stringWithContentsOfFile:...:

• split it into a line-array with componentsSeperatedByString:@"\n"

• split each line-array line with componentsSeperatedByString:@"\t"