
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 …
What is the difference between $ {var}, "$var", and "$ {var}" in the ...
Aug 9, 2013 · The second sentence of the first paragraph under Parameter Expansion in man bash says, The parameter name or symbol to be expanded may be enclosed in braces, which …
When should you use "var", "let", or "const" in JavaScript code
Apr 13, 2023 · I came across JavaScript variables and realized there are three different ways to go about them (var, let and const). Do they each have a specific purpose or you can just use …
c# - How to initialize var? - Stack Overflow
May 25, 2010 · C# is a strictly/strongly typed language. var was introduced for compile-time type-binding for anonymous types yet you can use var for primitive and custom types that are …
sql - How to declare a variable in MySQL? - Stack Overflow
Aug 1, 2012 · There are mainly three types of variables in MySQL: User-defined variables (prefixed with @): You can access any user-defined variable without declaring it or initializing …
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 …
javascript - Is declaring multiple variables in the same var …
Assignment in javascript works from right to left. var var1 = var2 = var3 = 1;. If the value of any of these variables is 1 after this statement, then logically it must have started from the right, …
What is indirect expansion? What does $ {!var*} mean?
Dec 15, 2011 · What is indirect expansion? What does $ {!var*} mean? Asked 13 years, 7 months ago Modified 4 months ago Viewed 79k times
What is the purpose of the var keyword and when should I use it …
Since var declares a variable in the current scope , there is no difference between declaring var inside window and not declaring it at all. The difference comes when you're not directly inside …
What does "var" mean in C#? - Stack Overflow
Jun 11, 2020 · var is a "contextual keyword" in C# meaning you can only use it as a local variable implicitly in the context of the same class that you are using the variable.