isEqualToString vs ==
99302
What is the diffrence between isEqualToString and operator == in Objective C?
36929
Why does comparing strings using either '==' or 'is' sometimes produce a different result?
137403
How to best implement Equals for custom types?
128865
The equals() method in Java works unexpectedly on Long data type
4772
Difference between "not equal" operators  and != in PHP
62005
Implied string comparison, 0=='', but 1=='1'
93360
Performance differences between equal (=) and IN with one literal value
43413
Ruby: String Comparison Issues
144361
string.IsNullOrEmpty(string) vs. string.IsNullOrWhiteSpace(string)
43489
Why does Boolean.ToString output "True" and not "true"
109282
Java comparison with == of two strings is false?
1736
How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ?
118470
Javascript string/integer comparisons
118582
Using the equality operator == to compare two strings for equality in C
123818
Macro in Objective-C calling isEqualToString: produces error about invalid token
109876
In the msdn guidance on Equals override, why the cast to object in the null check?
13411
What is difference between different string compare methods