re to validate x/(x+b)=(dx)/a like 7/(x+9) = (4x)/3

the decimal, double point with range number from minus to plus range number, the example from -199.99 to 199.99 revision from example pattern 1: ^(?:\-?10(?:\.\d\d?)?|\-?[1]?[1-9]?0-9?)$

Nothing at the moment

Automated version of process described here Takes TI dis6x disassembly output Removes leading address and spaces Rotates endianess Presents as "binary as ASCII" blob ready for insertion with HEX edit tool...

to detect date format YYYY-MM-DD ony starting from 1900

skip a word initially then get the package from pair of slashes

at least 1 lower-case character at least 1 upper-case character at least 1 number or special character

Phone number

Email

Twig Translation Regex

Valid domain check, includes multibyte character check.

See https://en.wikipedia.org/wiki/Telephone_numbers_in_Sri_Lanka

Sri Lankan Land/Fixed-line Telephone Number Validation This expression validates if a given value is a valid Sri Lankan fixed line / land line telephone number. Sri Lankan land line numbers starts from 0 and does not contain 7 in the 2nd digit, and is 10 digits in length. ...

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Card number

google api

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Remove all empty lines from text document.

In the first capturing group, match any character that isn't a newline, then, match a newline, then, in a non-capturing group, match a newline. Replace the the entire matched sequence with contents of the first capturing group followed by a space.

Remove leading and trailing spaces from multiline text.