What does &:to_s mean in b.map(&:to_s)
32711
What does map(&:name) mean in Ruby?
45816
What do $< and $@ represent in a Makefile?
98591
What does an ampersand after this assignment operator mean?
154467
What data structure is inside std::map in C++?
13934
Is there any difference between the `:key => "value"` and `key: "value"` hash notations?
110165
What is "x && foo()"?
106517
Weird output of [97,98].map(String.fromCharCode)
10475
Operator precedence for  And/&& in Ruby
51434
What does the symbol $\subset\subset$ mean?
126859
$\Bbb Z^\ast$ What is this notation?
25358
What is the differences between &> and 2>&1
50864
List comprehension vs map
91700
What does <<DESC mean in ruby?
157005
What does the ampersand indicate in this bash command 1>&2
96571
Does the position of the * or & matters?
131257
$\to$ vs. $\vdash$ in logic
109376
Is indexing a new map element and having something that reads it assigned to it undefined behaviour, or just unspecified?