What is the difference between $ {var}, "$var", and "$ {var}" in the ...
Aug 9, 2013 · $var and ${var} are the same, if var is the name of the variable. The braces are required when parameter is a positional parameter with more than one digit, or when …
What is the difference between "let" and "var"? - Stack Overflow
Apr 18, 2009 · Scoping rules The main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let …
What does 'var that = this;' mean in JavaScript? - Stack Overflow
Feb 3, 2011 · In a JavaScript file I saw: function Somefunction(){ var that = this; ... } What is the purpose of declaring that and assigning this this to it?
linux - What goes in /var? - Stack Overflow
Aug 29, 2013 · I read The Linux Command Line by William Shotts, and there are some descriptions of Linux files (system directories): The /var directory contents don't change. This …
javascript - Difference between var = {} and var ... - Stack Overflow
Possible Duplicate: Objects vs arrays in Javascript for key/value pairs I have a variable in JavaScript which I am using like a hash. I can initialize it like: var selected = []; or var selec...
What does "${!var}" mean in shell script? - Stack Overflow
Dec 2, 2016 · What does "$ {!var}" mean in shell script? [duplicate] Asked 8 years, 9 months ago Modified 8 years ago Viewed 13k times
java - The difference between ++Var and Var++ - Stack Overflow
Similarly, var++ is the post-increment operator; it increments the value of var after evaluating the expression. In the case of a simple loop, there is no difference between two, because the …
Access files in /var/mobile/Containers/Data/Application without ...
Jun 27, 2016 · A program logs some message in directory /var/mobile/Containers/Data/Application on iPhone. Is there any way I can get access to this …
How to fix Docker: Permission denied - Stack Overflow
Feb 24, 2018 · I ran into a similar problem as well, but where the container I wanted to create needed to mount /var/run/docker.sock as a volume (Portainer Agent), while running it all under …
php - What is /var/www/html? - Stack Overflow
Closed 12 years ago. I am starting to pick up PHP / MySQL, but in all the documentation I'm reading, it mentions /var/www/html as being the folder you want to install a framework such as …