What does the regular expression ^(\d{1,2})$ mean?
6448
Reference - What does this regex mean?
143509
Meaning of notation with two letters inside of parentheses [binomial coefficient]
130919
Regular expression for letters, numbers and - _
71795
What does the Bash operator <<< (i.e. triple less than sign) mean?
27742
What does "${-#*i}" != "$-" mean?
75764
Regularity of a domain - definition
48894
What does "\" mean in math
119219
What does Mod^(1,0) mean in mathematica output
748
What do 'lazy' and 'greedy' mean in the context of regular expressions?
6276
Difference between \xx{} and \mathxx{}?
146668
What does square bracket [] mean in the below code?
145840
What does "3>&1 1>&2 2>&3" do in a script?
9011
R regular expressions: unexpected behavior of "[:digit:]"
65086
Regular expression using \\ vs using \
82369
What does #{...} mean?
153794
What is the meaning of $1/(D+a)$, where $D$ is the derivative operator?
19260
What does the notation $q^k || n$ mean?