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poppy

string operation?

Hi

How can I add or subtract string?

Say, stringA = ABB stringB = BB

stringC = stringA - stringB = A

can it be `chs("stringA")-chs("stringB")`?

I'm new to this :)

thanks

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+ is directly supported so `chs("stringA") + chs("stringB")` will give you ABBBB

- is tricky, since there is many interpretations of that

like ABB - BB = A, easy, but what about BBABB - BB? is it A? BBA? ABB?

what you can do is

`strreplace(chs("stringA"), chs("stringB"), "")`

it will find stringB in stringA and replace with nothing (so the case where BBABB - BB = A)

if you want something more flexible use python

there is plenty of resources on python string operations and regular expressions on the net

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I see, so

`strreplace(chs("stringA"), chs("stringB"), "")` means: search for "stringB" in "stringA" then replace with nothing "", right?

Thanks, this help :)

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