An Ampersand (&) before a function means?
20
What does it mean to start a PHP function with an ampersand?
138211
Defining a function using a preceding expression
102080
What's the meaning of * and & when applied to variable names?
84584
Difference between | and || or & and && for comparison
98456
n & (n-1) what does this expression do?
132179
Is  && statement() the same as if() statement()?
68351
Why can I use a function before it's defined in JavaScript?
60689
How do I use the ampersand (&) inside a foreach or conditional (or other group/environment) when building tables?
158935
What is the difference between short (&,|) and long (&&, ||) forms of AND, OR logical operators in R?
41350
When to use & instead of "and"
113005
What does this notation mean? $f(x) \equiv A$?
110165
What is "x && foo()"?
139110
Do I encode ampersands in ?
112290
Weird behavior of & function in Set
84741
Using the && operator in an if statement
35250
Why is the asterisk before the variable name, rather than after the type?
132614
Python, what does an underscore before parenthesis do