Strings

char

Coerce to char

format

Formats a string using java.lang.String.format, see java.util.Formatter for format string syntax

keyword

Returns a Keyword with the given namespace and name. Do not use : in the keyword strings, it will be added automatica...

name

Returns the name String of a string, symbol or keyword.

parse-boolean

Parse strings "true" or "false" and return a boolean, or nil if invalid

parse-double

Parse string with floating point components and return a Double value, or nil if parse fails. Grammar: https://docs...

parse-long

Parse string of decimal digits with optional leading -/+ and return a Long value, or nil if parse fails

parse-uuid

Parse a string representing a UUID and return a java.util.UUID instance, or nil if parse fails. Grammar: https://do...

str

With no args, returns the empty string. With one arg x, returns x.toString(). (str nil) returns the empty string. Wit...

symbol

Returns a Symbol with the given namespace and name. Arity-1 works on strings, keywords, and vars.

blank?

True if s is nil, empty, or contains only whitespace.

capitalize

Converts first character of the string to upper-case, all other characters to lower-case.

ends-with?

True if s ends with substr.

escape

Return a new string, using cmap to escape each character ch from s as follows: If (cmap ch) is nil, append ch ...

includes?

True if s includes substr.

index-of

Return index of value (string or char) in s, optionally searching forward from from-index. Return nil if value not fou...

join

Returns a string of all elements in coll, as returned by (seq coll), separated by an optional separator.

last-index-of

Return last index of value (string or char) in s, optionally searching backward from from-index. Return nil if value n...

lower-case

Converts string to all lower-case.

re-quote-replacement

Given a replacement string that you wish to be a literal replacement for a pattern match in replace or replace-first,...

replace

Replaces all instance of match with replacement in s. match/replacement can be: string / string char / char ...

replace-first

Replaces the first instance of match with replacement in s. match/replacement can be: char / char string / st...

reverse

Returns s with its characters reversed.

split

Splits string on a regular expression. Optional argument limit is the maximum number of parts. Not lazy. Returns vect...

split-lines

Splits s on \n or \r\n. Trailing empty lines are not returned.

starts-with?

True if s starts with substr.

subs

Returns the substring of s beginning at start inclusive, and ending at end (defaults to length of string), exclusive.

trim

Removes whitespace from both ends of string.

trim-newline

Removes all trailing newline \n or return \r characters from string. Similar to Perl's chomp.

triml

Removes whitespace from the left side of string.

trimr

Removes whitespace from the right side of string.

upper-case

Converts string to all upper-case.

string?

Return true if x is a String

re-find

Returns the next regex match, if any, of string to pattern, using java.util.regex.Matcher.find(). Uses re-groups to r...

re-groups

Returns the groups from the most recent match/find. If there are no nested groups, returns a string of the entire matc...

re-matcher

Returns an instance of java.util.regex.Matcher, for use, e.g. in re-find.

re-matches

Returns the match, if any, of string to pattern, using java.util.regex.Matcher.matches(). Uses re-groups to return th...

re-pattern

Returns an instance of java.util.regex.Pattern, for use, e.g. in re-matcher.

re-seq

Returns a lazy sequence of successive matches of pattern in string, using java.util.regex.Matcher.find(), each such ma...