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D.12.2.42 find_index
Procedure from library crypto.lib (see crypto_lib).
- Usage:
- find_index(a, e)
- Return:
- Returns the list index of element e in list a. Returns 0 if e is not in a
Example:
| LIB "crypto.lib";
list a = 1,5,20,6,37;
find_index(a,20);
==> 3
find_index(a,6);
==> 4
find_index(a,100);
==> 0
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