Is there a significant performance difference between '==' and '==='?
665
Which equals operator (== vs ===) should be used in JavaScript comparisons?
128255
Empty Strings: Why or when is '' equal to ' '?
125824
The forgotten assignment operator "=" and the commonplace ":="
15097
Is there any difference between IS NULL and =NULL
38241
How do I check for nulls in an '==' operator overload without infinite recursion?
62005
Implied string comparison, 0=='', but 1=='1'
94806
Is ||= in Ruby thread safe?
118582
Using the equality operator == to compare two strings for equality in C
99610
The difference between += and =+
28755
Performance issues with nested loops and string concatenations
16038
C# 'is' operator performance
89746
What is performance of ContainsKey and TryGetValue?
131933
On the usage of Java equality operator
134742
String comparison in Python: is vs. ==
3941
What's the difference between ".equals" and "=="?
67684
Does moving variable declaration outside of a loop actually increase performance?
2146
object==null or null==object?