Perl 6
WITCH hack: Revision 6
Mnemonics
"backslash", "escape", "hack"
- used to "back out" of a syntax to a character's original meaning
- used to "hack" around, or "escape", special characters
When used inside a regular expression
\ in front of any character will change it from a metacharacter to a literal, or visa versa.
Operators containing this character
Modifying a reduction operator such as [\+] (modification of [+]) creates a lazy feed of intermediary results..
Other Uses
unary \ as a noun in front of an argument or arguments creates a Capture
\ in front of whitespace creates an unspace which is used to jam spaces in where they don't belong.
\o \c \x and \d used inside an interpolated string introduce literal characters
