LAE

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Originally posted by: michaelslowey

Is there any way to replace multiple exact occurences of a word within a string.

For example

I want to replace "NO" here with "YES"

emit "NO I AM GOING NORTH".replace("NO","YES") as text

The emitted out put becomes "YES I AM GOING YESRTH"

I could use...

emit "NO I AM GOING NORTH".replace("NO ","YES ") as text

But that would also replace "NO" at the end of words (eg "BONO") and not replace "NO" at the end of a piece of text (eg "THIS SIGN SAYS NO")

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Originally posted by: ddonovan

You need to use the regular expression operators to handle more complex situations such as this. The below example will accomplish what you want, using 3 regexSubstitute() calls. There is probably a way to consolidate these into a single regular expression, but I will leave that as an exercise for the reader.

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Originally posted by: michaelslowey

When I use those commands with this text "NO IAM AM NOT GOING NORTH" I get "YES IAM AM YES GOING YES" as the output.

the help doesn't have the extended instructions I need.

cheers
mick

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Originally posted by: ddonovan

Yeah, the regular expressions I had in my example were not completely correct for the rule that you want. It was only intended as an example to handle the specific case that you mentioned before. Regular expressions within BrainScript follow the Perl RegEx syntax. There are many tutorials for this available online. Here is one that includes some examples:

http://www.troubleshooters.com/codec...rl/perlreg.htm

Others are also available which go into much more detail. Repost here if you have trouble figuring it out, and I will be happy to provide some more assistance.

Cheers.

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Originally posted by: michaelslowey

Problem Solved...

text = "NO I AM AM NOT GOING NORTH NO"

emit text.regexSubstitute("NO\\b", "YES") as text

The "switches" on the regexSubstitute supply the answer... in this case "\\b" only replaces at a word border "NO...." , "...NO..." or "...NO"

This gives "YES I AM AM NOT GOING NORTH YES"

Cheers
Mick