Golang : error parsing regexp: invalid or unsupported Perl syntax
Compiling and running Golang program will throw out some odd error messages sometimes. Got one today with this error message below while testing out regular expressions in Golang :
error parsing regexp: invalid or unsupported Perl syntax: (?!
Apparently it was because Perl syntax and negative lookahead is not supported in Golang. Golang's Regular Expression syntax is different from PCRE's (which is used by php and javascript ).
To fix this you can either convert your regular expression to non-Perl syntax style or install https://github.com/tuxychandru/golang-pkg-pcre/
If you requirement is not too complex, you can also consider the Golang unicode package. There are couple of functions such as IsDigit, IsNumber and IsPunct that might be useful.
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+4.8k Golang : Selection sort example
+8.4k Golang : Simple Jawi(Yawi) to Rumi(Latin/Romanize) converter
+7.6k Golang : What is the default port number for connecting to MySQL/MariaDB database ?
+15.8k Golang : Login and logout a user after password verification and redirect example
+15.6k Golang : Aligning strings to right, left and center with fill example
+6.6k Golang : Regular Expression find string example
+9.5k Golang : Concatenate (combine) buffer data example
+31.3k Delete a directory in Go
+16k Google Chrome : Your connection to website is encrypted with obsolete cryptography
+10k Golang : Concurrency and goroutine example
+18.5k Golang : How to get struct tag and use field name to retrieve data?
+8.3k Golang : Bcrypting password
