mongoDB Notes

note.txt

## searching with regular expressions
you can use regular expressions while searching for something ex:
    db.airports.find(name: {$regex: "[^\s]paris", $options: "i"})
this regex matches every document in airports collections whichs name start with paris
or include whitespace character and then paris. but this will't work as expected because
in strings \ character works as escape character so we need to excape it too
this will work as expected:
    db.airports.find(name: {$regex: "[^\\s]paris", $options: "i"})