dwahyudi
Regex to replace every odd and even occurence in string
So I’m struggling about regex on markdown exercise on exercism.io
Basically how to turn something like this:
"_hello_ kevin, please go to chair number _132_ and grab the plate number _4_"
into this
"<em>hello</em> kevin, please go to chair number <em>132</em> and grab the plate number <em>4</em>"
we replace every odd "_" occurence with "<em>"
we replace every even "_" occurence with "</em>"
I’ve been tinkering with String and Regex module, but none works… or, am I doing something wrong here?
Marked As Solved
amnu3387
iex(1)> str = "_hello_ kevin, please go to chair number _132_ and grab the plate number _4_"
iex(2)> test = Regex.replace(~r/\_(.*?)\_/, str, "<em>\\g{1}</em>")
"<em>hello</em> kevin, please go to chair number <em>132</em> and grab the plate number <em>4</em>"
This would work if you want to do it with a regex explicitly and you’re sure a “_” will always be used to only start and end a delimitation for substitution.
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