StringTake

A substring of s — the first/last n characters, or an explicit 1-based range.

✓ checked against that system · ! checked, with disagreements (hover a chip)Wolfram LanguageStringTake✓↗

StringTake(s, n)the first n characters of s; the last |n| if n is negative

StringTake(s, {n})the nth character alone, as a length-1 string

StringTake(s, {m, n})characters m through n inclusive, 1-based, negative counting from the end

Typed signatures

Type	Package	Applies
(string, integer | list<integer>) -> string	combinatorics	always

Domain: Collections

Details

• Positions and lengths count Unicode code points — see StringLength.

Examples

Basic #

live ↗

In$\mathrm{StringTake}(\text{\text{hello world}}, 5)$Out$\text{hello}$

The first six characters

live ↗

In$\mathrm{StringTake}(\text{abcdefghijklm}, 6)$Out$\text{abcdef}$

A negative count takes from the end

live ↗

In$\mathrm{StringTake}(\text{abcdefghijklm}, -4)$Out$\text{jklm}$

A pair gives an inclusive range of positions

live ↗

In$\mathrm{StringTake}(\text{abcdefghijklm}, \bigl\lbrack5, 10\bigr\rbrack)$Out$\text{efghij}$

The string is shorter than 5, so the call stays unevaluated, as in Wolfram

live ↗

In$\mathrm{StringTake}(\text{hi}, 5)$Out$\mathrm{StringTake}(\text{hi}, 5)$

Scope #

live ↗

In$\mathrm{StringTake}(\text{\text{hello world}}, -5)$Out$\text{world}$

live ↗

In$\mathrm{StringTake}(\text{hello}, \bigl\lbrack2\bigr\rbrack)$Out$\text{e}$

live ↗

In$\mathrm{StringTake}(\text{\text{hello world}}, \bigl\lbrack1, 5\bigr\rbrack)$Out$\text{hello}$

-7 counts back from the end, landing on the same range as {1, 5}

live ↗

In$\mathrm{StringTake}(\text{\text{hello world}}, \bigl\lbrack1, -7\bigr\rbrack)$Out$\text{hello}$

A one-element list takes just that character

live ↗

In$\mathrm{StringTake}(\text{abcdefghijklm}, \bigl\lbrack6\bigr\rbrack)$Out$\text{f}$

Properties #

A newline counts as one character

live ↗

In$\mathrm{StringTake}(\text{abc\char"000A{}def}, 5)$Out$\text{abc\char"000A{}d}$

Range ends may be negative, counting from the end

live ↗

In$\mathrm{StringTake}(\text{abcdefghijklm}, \bigl\lbrack5, -4\bigr\rbrack)$Out$\text{efghij}$

About

Examples	12
Checked against	Wolfram Language 12 agree
Crosswalk	Wolfram Language

See also: StringLength