How to solve Operator '!=' cannot be applied to operands of type 'T' and 'T'
14099
Can't operator == be applied to generic types in C#?
91338
! Undefined control sequence
6180
Error: 'else' without 'if'
23042
no match for ‘operator<<’ in ‘std::operator
32886
What is the difference between != and =! in Java?
24759
How do I use the conditional (ternary) operator?
118365
Error in if/while (condition) { : argument is of length zero
3574
What is the !! (not not) operator in JavaScript?
14371
Unexpected operator error
101165
"Incompatible operand types int and string"
81508
error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)
79050
Python ( or general programming ). Why use  instead of != and are there risks?
68876
Conditional operator assignment with Nullable types?
69282
TypeError: unsupported operand type(s) for -: 'str' and 'int'
119798
Why we can't use operator % for float and double type operands?
94498
! You can't use `\eqno' in math mode
125415
Why is undefined == undefined but NaN != NaN?