match

RegExp → String → [String | Undefined]

Parameters

• rxA regular expression.
• strThe string to match against

Returns Array The list of matches or empty array.

Added in v0.1.0

Tests a regular expression against a String. Note that this function will return an empty array when there are no matches. This differs from String.prototype.match which returns null when there are no matches.

See also test.

R.match(/([a-z]a)/g, 'bananas'); //=> ['ba', 'na', 'na']
R.match(/a/, 'b'); //=> []
R.match(/a/, null); //=> TypeError: null does not have a method named "match"

split

(String | RegExp) → String → [String]

Parameters

• sepThe pattern.
• strThe string to separate into an array.

Returns Array The array of strings from str separated by sep.

Added in v0.1.0

Splits a string into an array of strings based on the given separator.

See also join.

const pathComponents = R.split('/');
R.tail(pathComponents('/usr/local/bin/node')); //=> ['usr', 'local', 'bin', 'node']
R.split('.', 'a.b.c.xyz.d'); //=> ['a', 'b', 'c', 'xyz', 'd']

trim

String → String

Parameters

• strThe string to trim.

Returns String Trimmed version of str.

Added in v0.6.0

Removes (strips) whitespace from both ends of the string.

R.trim('   xyz  '); //=> 'xyz'
R.map(R.trim, R.split(',', 'x, y, z')); //=> ['x', 'y', 'z']