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Returns the position of first appearance of sub_string in text.
The comparison is case sensitive.
Returns -1 if sub_string not found
Character position is 1 based (not 0 based as usual in calculations).
If sub_string is empty, this routine returns 1. This case will often have to be handled specially.
Examples
In the examples, the string to be searched is Abcdefghijklm:
A; 1
a; -1
def; 4
klm; 11
zyx; -1
empty;klm;-1
empty;empty; 1
TemplateData
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TemplateData for Str find
A template to find the numeric position of first appearance of ''sub_string'' in ''text''
