string->isAlnum
Tests alphanumeric characters.
Target
Signature
1string->isAlnum(position::integer= ?)Tests alphanumeric characters.
string->isAlnum is called with member syntax on a receiver value. string->isAlnum works with text values. Normalize input at boundaries, escape at output boundaries, and keep encoding calls close to the place where the encoded text is needed.
Parameters
position- Optional value of type
integer. Supplypositionpositionally unless the signature shows a keyword form.
Examples
Basic call
1'A1'->isAlnumThe example shows the receiver and result shape. In templates, apply escaping at the final output boundary.