What can be inferred from javascript variables that begin with _?
96487
Underscore prefix for property and method names in JavaScript
148080
Brace expansion with a Bash variable - {0..$foo}
56113
Operator precedence with Javascript Ternary operator
123815
How to find JavaScript variable by its name
115437
Javascript || operator
37415
Determine source of ⌘⌥\ being an alias of ⌘C
5377
Is there a standard function to check for null, undefined, or blank variables in JavaScript?
43312
What does an underscore and interface name after keyword var mean?
57007
What is the meaning of $? in a shell script?
82369
What does #{...} mean?
119974
What does << mean in Java?
112667
Bash variable substitution of variable followed by underscore
59150
What do you call the -> operator in Ruby?
113601
What is the difference between .*? and .* regular expressions?
101128
What is "?:" notation in JavaScript?
113905
How can I check whether a variable is defined in JavaScript?
83782
How to check a not-defined variable in JavaScript