string.find v string.gfind
Conditionals and loops example from a Well House Consultants training course
More on Conditionals and loops [link]
Source code: bpm Module: U103
String.find will find the first occurrence of a pattern within a
string and return to you the start position and length of the match.
String.gfind (global find) will find all non-overlapping matches to
a string and can be used to iterate through a series of elements in
an incoming text string. Capture parenthises in the match string
allow you to select 'interesting bits' to return to the calling code.
addy = "404, The Spa, Melksham, SN12 6QL, UK"
f,t = string.find(addy,"[^k]+",1)
emma = [[I am at email@example.com and
firstname.lastname@example.org is currently route to me too]]
for who, where in string.gfind(emma,"(%S+)@(%S+)",1) do
--[[ Sample output ---------------------
[trainee@easterton nts]$ lua bpm
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