Is += more efficient than concat?
2203
String concatenation: concat() vs "+" operator
50187
Which "if" construct is faster - statement or ternary operator?
62129
In PHP (>= 5.0), is passing by reference faster?
56572
Which method performs better: .Any() vs .Count() > 0?
74620
is the + operator less performant than StringBuffer.append()
60699
Is there a benefit to defining variables together with a comma vs separately in JavaScript?
100132
What does the "+=" operator do in Java?
38967
What is the precedence of the + (plus) operator in Java?
148619
Is there a reason not to use  (null safe equals operator) in mysql instead of =?
28755
Performance issues with nested loops and string concatenations
33262
How can two strings be concatenated?
156950
Why do some people use $+\infty$ instead of $\infty$?
68713
Why is it Valid to Concatenate Null Strings but not to Call "null.ToString()"?
133999
Does variables' order matter when doing == and === comparisons?
82662
string = string + int: What's behind the scenes?
49757
Is using double faster than float?
91999
C++: Why pass-by-value is generally more efficient than pass-by-reference for built-in (i.e., C-like) types