省市县

self explainatory title, usernames array must not contain any exotic character besides ,

self explainatory title, username must not contain any exotic character.

change markdown image embeds to html image embeds

This code used to validate any email.

match offset from utc offset string returned by the timeZoneName property of an Intl.DateTimeFormat object. (see MDN documentation here)

Get Complete Domain with protocol, username, Third-Level-Domain, Second-Level-Domain, Top-Level-Domain and Port For Example: Course at https://udemy.com/path/to/course Test at http://user@sample.com/path Something ftp://domain.com:80/any...

Exponential Value Identification

This is a filter for E-mail id

Follows ISO 8601 standard (YYYY-MM-DD) $1 is year, $2 is month and $3 is day (for substitution)

Start from 1900-01-01

#(\w+)\s(\w+)\s(\S+) This allows you to capture C-style compiler directives

Format YYYY-MM-JJ

/(?: ?\G|^cats are )((?:silly|cute)(?: |$))/

WTFORUMS

This is a regex for a C-style variable capture. Group 1 is the type, group 2 is the name, group 3 is the operator, and finally, group 4 is the value.

DCL

Matches strings that are Well-formed-formulas in Propositional with the following symbols {⊤,⊥,∧,∨,¬,→,↔} This matches with formulas that are looser then defined by formal syntax (See https://en.wikipedia.org/wiki/Well-formed_formula#Propositional_calculus). Namely, it's able to match with \> No Ext...

Matches a string if the string represents a Well-Formed-Formula in a Truth-Functional-Logic with the symbols {⊥, ¬, ∧, ∨, →, ↔} The rules are as follows: https://en.wikipedia.org/wiki/Well-formed_formula#Propositional_calculus (Outside parenthesis are omitted)

Full Name convention either as "firstname lastname" or "lastname, firstname" FirstName must be at least 1character long. LastName must be at least 2characters long. Accepts multiple worded name Optional Middle Initial (with period, up to 2 maximum initials). Placement either middle or last depending...