Hi Keith,
I think the simplest method would be (almost) your second attempt below.
However, you were using "*est*" - i.e. with the '*'s before and after
the phrase, which is what you would need for 'filter' but not for
'contains'. So it should work with just
put “my test phrase” into myTestPhrase
put “est” & cr & “phr” into tSubstrings
repeat for each line L in tSubstrings
if myTestPhrase contains L then answer “true”
end repeat
There's almost certainly also a way of doing it in a single pass using
regex - but I'm not brave enough to go there :-)
Are you expecting reallylarge strings to search ? Or really many
phrases to search for ?
"beware optimizing something that is just plain fast enough already"
Alex.
On 01/11/2018 09:41, Keith Clarke via use-livecode wrote:
Folks,
What is the most efficient way to test whether a variable containing a string
such as “my test phrase” contains one of several variable substrings, such as
“est” OR “phr” OR... ?
So far I’ve tried (without luck) approaches that simplify into...
put “my test phrase” into myTestPhrase
put “*est*” & cr & “*phr*” into tSubstrings
if myTestPhrase is among the lines of tSubstrings then answer “true”
repeat for each line L in tSubstrings
if myTestPhrase contains L then answer “true”
end repeat
Both seem to be failing - do I have the wrong syntax or approach to the problem?
TIA
Keith
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