What and Why
1) What is it
- A language to specify the rules for the set of possible strings that you want to search in a corpus of text
"You password must have at least 8 characters, at least 1 upper case letter, at least 1 lowercase letter, at least 1 number and at lleast 1 symbol from the special symbols"
2) Why
- Why not using a pyhton program for seaching?
- Why not string functions?
- Can these find everything one wants?
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