substring

substring(string string, number start, [number length]) → string string

Returns the substring of the string string starting from the character at index start and of length length.

Parameters

• string The source string.
• start The index of the starting character.
• length The length of the substring.

Return

• string The substring.

Python

In Python, you take a slice: s[start:end] returns the characters from index start included to end excluded, so s[start:start + length] for a length length. Both bounds are optional (s[3:], s[:5]), a negative index counts from the end (s[-3:]), and a third number sets the step: "Hello world!"[2:10:2] is "lowr".

Examples

substring("Hello world!", 3) // "lo world!" substring("Hello world!", 3, 6) // "lo wor"

See also

• split