EndOfString represents the end of a string for purposes of matching in StringExpression.
StartOfLine represents the start of a line in a string for purposes of matching in StringExpression.
StartOfString represents the start of a string for purposes of matching in StringExpression.
WhitespaceCharacter represents a single whitespace character in StringExpression.
Whitespace represents a sequence of whitespace characters in StringExpression.
WordBoundary represents a boundary between words for purposes of matching in StringExpression.
StringPosition["string", " sub"] gives a list of the starting and ending character positions at which " sub" appears as a substring of " string". StringPosition["string", ...
StringSplit["string"] splits " string" into a list of substrings separated by whitespace. StringSplit["string", patt] splits into substrings separated by delimiters matching ...
Mathematica symbols are the ultimate atoms of symbolic data. Every symbol has a unique name, exists in a certain Mathematica context or namespace, and can have a variety of ...
NotElement[x, dom] or x \[NotElement] dom asserts that x is not an element of the domain dom.NotElement[x_1 | ... | x_n, dom] asserts that none of the x_i are elements of ...