String Functions

String functions are used to evaluate, format, and manipulate string arguments, or to convert an object to a string.

concat	Returns the concatenation of the arguments.
contains	Returns true if the first argument string contains the second argument string; otherwise returns false.
normalize-space	Returns the argument string with the white space stripped.
starts-with	Returns true if the first argument string starts with the second argument string; otherwise returns false.
string	Converts an object to a string.
string-length	Returns the number of characters in the string.
substring	Returns the substring of the first argument starting at the position specified in the second argument and the length specified in the third argument.
substring-after	Returns the substring of the first argument string that follows the first occurrence of the second argument string in the first argument string.
substring-before	Returns the substring of the first argument string that precedes the first occurrence of the second argument string in the first argument string.
translate	Returns the first argument string with occurrences of characters in the second argument string replaced by the character at the corresponding position in the third argument string.