Split a delimited NSString into a NSArray
// Splitting a NSString delimited by any character like comma, space, hash etc. into a NSArray
// can be done by calling componentsSeparatedByString method on the NSString as shown in below.
NSString *termString = @"A,B,C,D,E";
NSArray *terms = [termString componentsSeparatedByString:@","];
NSLog(@"Terms array %@",terms);
How to compute SHA1 digest for NSString? 
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