isdigit
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— | isdigit [2006/07/11 04:57] (current) – created - external edit 127.0.0.1 | ||
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+ | # $EPIC: isdigit.txt, | ||
+ | ======Synopsis: | ||
+ | $__isalpha__(< | ||
+ | $__isdigit__(< | ||
+ | |||
+ | ======Technical: | ||
+ | These function test whether the first character in the given string is | ||
+ | an alphabetical character or a digit. | ||
+ | tested. | ||
+ | |||
+ | ======Practical: | ||
+ | These functions are useful for testing an input string to see whether it | ||
+ | is a number or a text string. | ||
+ | would be suitable input for $[[iptoname]]() or $[[nametoip]](). | ||
+ | that only the first character is tested, so this isn't a reliable way | ||
+ | to see if the entire string is a number. | ||
+ | |||
+ | ======Returns: | ||
+ | " | ||
+ | |||
+ | ======Examples: | ||
+ | < | ||
+ | $isalpha(hello) | ||
+ | $isalpha(2hello) | ||
+ | $isdigit(123) | ||
+ | $isdigit(2abc) | ||
+ | $isdigit(a123) | ||
+ | </ | ||
isdigit.txt · Last modified: 2006/07/11 04:57 by 127.0.0.1