How can I take out a comma from a string and make it only as one number?

Asked Apr 9, 2020175 views2 answers

I can't figure out how to take out a comma from a string and make it only as one number.

print(string.match('Cost: $2,501', '(%d+)%z?,%z?(%d+)'))
-- Output: 2 501 -- It gives two numbers instead of just one.

AnonymousApr 9, 2020

2 answers

✓ Accepted answer

It's most likely something string.match does automatically when separating sets. You can simplify the string pattern you're using by using gmatch:

local str = ""

for i in ("Cost: $2,501"):gmatch("%d+") do
	str = str .. i
end

print(str)

AnonymousApr 9, 2020Edited Apr 9, 2020Permalink

1 comment

Thank you!

AnonymousApr 9, 2020#

You could replace the comma using gsub and then match for any digits. Like so

print(string.match(string.gsub("Cost: $2,501", ",", ""), "%d+"))

AnonymousApr 9, 2020Permalink

1 comment

Thanks so much!

AnonymousApr 9, 2020#

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