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1 2 3 4 5 6 7 8 9 10 11 12 13 14 | ISALPHA ISALPHA Test for Alpha Characters in a String
Usage
The isalpha functions returns a logical array that is 1
for characters in the argument string that are letters, and
is a logical 0 for characters in the argument that are not
letters. The syntax for its use is
x = isalpha(s)
where s is a string. Note that this function is not
locale sensitive, and returns a logical 1 for letters in the
classic ASCII sense (a through z, and A through Z).
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