校验数学表达式：主要功能如下： 连续的运算符，例如--5 运算符为正数时，其符号+必须省略，例如+2+4定义为非法，而负数时为合法，例如-2+4 前面补零 程序要能处理表达式中间出现的空格（输入表达式中存在空格为合法情况） (后面是运算符 + / * 没数字！ )前面是运算符 + - * / 没数字！...

This is a valid URL Path which should be written after Port or Basepath This URL Path doesn't support asterisk wildcard (/) (path). If you want to support asterisk wildcard, just add * in the last matching group. Like this: [A-Za-z0-9*] This implementation was meant for personal use, feel free to...

Clockify time extry grouping in hours, minutes, and seconds.

Parse emojies C Sharp example https://rextester.com/VFNJZ68617

Validates the subnet. Not the subnet mask. It is only for 2 or 3 octets

min / maj / special / digit / minChar=6