Wolfram: Get SubString, by Index

By Xah Lee. Date: . Last updated: .

Get Substring, by Index

StringTake[str, n]
  • First n chars.
  • If n is negative, last n chars.

StringTake 

StringTake["abcde", 3]
(* abc *)

StringTake["abcde", -3]
(* cde *)
StringTake[str, {n}]

nth char. 

StringTake["abcde", {3}]
(* c *)
StringTake[str, {n, m}]

nth to mth chars. 

StringTake["abcde", {2,4}]
(* bcd *)
StringTake[str, list_of_range_spec]

return a list of result, for each spec. 

StringTake["abcde", {2, {2}, {2,4}}]
(* {ab, b, bcd} *)
StringTake[list_of_strings, spec]

return a list of result, for each string. 

StringTake[{"abcde", "123456"}, 2]
(* {"ab", "12"} *)

StringTake[{"abcde", "123456"}, {2}]
(* {"b", "2"} *)

StringTake[{"abcde", "123456"}, {2,4}]
(* {"bcd", "234"} *)

(* HHHH------------------------------ *)

StringTake[{"abcde", "123456"}, {2, {2}, {2,4}}]
(* {{ab, b, bcd}, {12, 2, 234}} *)

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