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Checking the initial characters of a string in Icon

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The Icon function ``many(c, s)'' is used to find out how many of the initial characters of s are in the cset c.

For example, this expression

    many ( &letters, "12345" )
fails, while this expression
    many ( &letters, "abc123" )
returns 4, the position in the string just after its initial letters.
Next: Checking for an initial substring in Icon
See also: Using strings in Icon
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John Shipman,
Last updated: 1996/01/06 21:12:57 UT
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