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isdigit

check that characters of a string are digits between 0 and 9

Syntax

res = isdigit(str)

Arguments

str

a character string.

res

a boolean matrix.

Description

res = isdigit(str) returns an array the same size as str containing logical %t (TRUE) where the elements of str are digits and logical %f (FALSE) where they are not.

Examples

s = 'A1,B2,C3';
isdigit(s)

See also

  • isalphanum — check that characters of a string are alphanumerics
  • isletter — check that characters of a string are alphabetic letters
  • isnum — tests if a string represents a number
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Last updated:
Mon Jun 17 17:49:17 CEST 2024