m/.../

The match operator m/regex/ tests whether a string contains a substring matching the regex. For simple matches of this sort in Mathematica, use StringFreeQ.

Here is a Perl snippet for testing whether a string contains a "b" somewhere after an "a".

Here is a Mathematica version of the same test.

In[93]:=

If parts of the matched string need to be accessed later, using $1, $2, ... in Perl, the best Mathematica function to use is normally StringCases.

Here is Perl code for extracting an error message.

Here is a Mathematica version.

In[95]:=

Here is Perl code for extracting several subpatterns at once.

In Mathematica, this is done with StringCases.

In[97]:=

Out[98]=

This is similar to assigning all the matches to an array using the /g modifier.

The same thing is easily done with StringCases in Mathematica.

In[99]:=

Out[100]=