syntax Archives - Page 12 of 15

Are (non-void) self-closing tags valid in HTML5?

The W3C validator (Wikipedia) doesn’t like self-closing tags (those that end with “/>”) on non-void elements. (Void elements are those that may not ...

April 25, 2022
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How to use double or single brackets, parentheses, curly braces

I am confused by the usage of brackets, parentheses, curly braces in Bash, as well as the difference between their double or single ...

April 24, 2022
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How do you pass a function as a parameter in C?

I want to create a function that performs a function passed by parameter on a set of data. How do you pass a ...

April 23, 2022
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Difference between single and double quotes in Bash

In Bash, what are the differences between single quotes ('') and double quotes ("")? 7 s 7

April 22, 2022
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What is the difference between . (dot) and $ (dollar sign)?

What is the difference between the dot (.) and the dollar sign ($)? As I understand it, they are both syntactic sugar for ...

April 22, 2022
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Are double square brackets [[ ]] preferable over single square brackets [ ] in Bash?

A coworker claimed recently in a code review that the [[ ]] construct is to be preferred over [ ] in constructs like ...

April 21, 2022
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What does the “at” (@) symbol do in Python?

What does the @ symbol do in Python? 14 s 14 An @ symbol at the beginning of a line is used for ...

April 21, 2022
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All possible array initialization syntaxes

What are all the array initialization syntaxes that are possible with C#? 17 s 17 These are the current declaration and initialization methods ...

April 20, 2022
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When do we need curly braces around shell variables?

In shell scripts, when do we use {} when expanding variables? For example, I have seen the following: var=10 # Declare variable echo ...

April 20, 2022
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What is the difference between single-quoted and double-quoted strings in PHP?

I’m a little confused why I see some code in PHP with string placed in single quotes and sometimes in double quotes. I ...

April 18, 2022
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