Regular Expressions 101

Match IPv4 address, optionally with /32 CIDR notation

Match IPv4 address, optionally with /32 CIDR notation

Only step through your gulpfile, not Node JS or plugin code! Use Paste this pattern in Chrome Dev Tools under Settings > Blackbox Debug your gulpfile with node --inspect-brk .

Finds greys by checking if R, G, B values are equal

Simple email validation regexpr to handle subdomains and other stuff. See example

Splitting operators from numbers for a calculator

For Stackoverflow by Sufiyan Ghori

parse tanggal

Finds the discriminator flawlessly (as per its use)

Strips all non "A-Z,a-z,0-9+-_" characters and replaces them with a single "-"

15 digits for integer real number: 18 digits for before-dot part (*what it's called?)