syntax Archives - Page 14 of 15

Why does ++[[]][+[]]+[+[]] return the string “10”?

This is valid and returns the string "10" in JavaScript (more examples here): console.log(++[[++[+) Why? What is happening here? 10 If we split ...

April 10, 2022
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Comments in Markdown

How do you write a comment in Markdown, i.e. text that is not rendered in the HTML output? I found nothing on the ...

April 10, 2022
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How do I iterate over a range of numbers defined by variables in Bash?

How do I iterate over a range of numbers in Bash when the range is given by a variable? I know I can ...

April 10, 2022
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How do I break a string in YAML over multiple lines?

In YAML, I have a string that’s very long. I want to keep this within the 80-column (or so) view of my editor, ...

April 10, 2022
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How to concatenate string variables in Bash

In PHP, strings are concatenated together as follows: $foo = "Hello"; $foo .= " World"; Here, $foo becomes “Hello World”. How is this ...

April 10, 2022
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var functionName = function() {} vs function functionName() {}

I’ve recently started maintaining someone else’s JavaScript code. I’m fixing bugs, adding features and also trying to tidy up the code and make ...

April 9, 2022
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What does “use strict” do in JavaScript, and what is the reasoning behind it?

Recently, I ran some of my JavaScript code through Crockford’s JSLint, and it gave the following error: Problem at line 1 character 1: ...

April 9, 2022
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The difference between += and =+

April 8, 2022
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Else without if

you have an else statement after a for loop for(int i=3;i*i<=n;i+=2) { if(n%1==0) { System.out.println("Your number isn't prime."); } } else { System.out.println("Your number is prime!"); } ...

April 7, 2022
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What does ** (double star/asterisk) and * (star/asterisk) do for parameters?

What do *args and **kwargs mean? def foo(x, y, *args): def bar(x, y, **kwargs): 2 23

April 7, 2022
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