Extracting consecutive digits using regexp
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I expected
regexp('ITEM 123', '.+(\d+)', 'tokens')
to return '123'. Why does it only return '3'? What would be the correct expression?
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per isakson
2019-6-22
编辑：per isakson
2019-6-22
These two returns "123"
%%
cac = regexp('ITEM 123', '.+?(\d+)', 'tokens' )
%%
cac = regexp('ITEM 123', '[^\d]+(\d+)', 'tokens' )
First, '.+' matches anything up til the end of the text, next it gives back just as little as needed to match '(\d+)' , which is one digit.
'.+?' matches as little as needed so that '(\d+)' is able to match the following text.
I prefer '[^\d]+(\d+)'
Or why not just
cac = regexp('ITEM 123', '\d+', 'match' )
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