So far we have explored what charecters a regular expression could match, nowe we will look at what position those things may be in.
The two most common regular expression position matchers are
$ which represent the start and end of a string or line (depending
on the settings of the engine.
So the regex
^$ would represent the empty string and
represent a string that only contains the letter a, or could be blank.
But there are others if you want to match an exact word you can use a
\bmit\b which will match mit but not smith. The ‘\b`
marker will match the word bounder but not the space that comes before
and after it!