Unable to understand $variable and how it works
21506
Why would a JavaScript variable start with a dollar sign?
14596
Are PHP Variables passed by value or by reference?
75231
Why does this variable have no value even though it is set in .bashrc?
112100
What is the meaning of "$" sign in JavaScript
14779
How do ${0##*/} and ${0%/*} work?
108681
What is the $? (dollar question mark) variable in shell scripting?
18570
using $$ in a post causes strange number series to appear
67874
var name produces strange result in Javascript
114169
Why can't we define a variable inside a while loop?
124282
I just assigned a variable, but echo $variable shows something else
32293
What's the difference between if(!$variable) and if(isset($variable))?
49418
How does data binding work in AngularJS?
143637
What does ${ } mean in PHP syntax?
158457
Using | pipe character from a $variable makes it treat as just another argument in bash; how to escape it?
27742
What does "${-#*i}" != "$-" mean?
144673
Why does this JavaScript code print "undefined" on the console?
89549
Can anyone explain this 'variable does not exist error'?