How to construct Perl regex to replace (lowercase followed by uppercase) by (lowercase. uppercase)? -


i write perl regex replace pattern other pattern. source pattern lowercase followed uppercase. destination pattern lowercase followed dot, space , uppercase.

here example: 

camelcase

i want change following:

camel. case

thanks in advance!

i suggest following:

$stringtoconvert = s/([a-z][a-z]+)(?=[a-z])/$1\. /g;

the positive ahead "(?=[a-z])" key. words replaced have capitalized character in front of it.

also note "g" means search string globally. results in following:

camelcase camel. case

as as

camelcasemultiple camel. case. multiple

and on , on many capitalized words there may in string.


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