It is unclear if the short note is about regular expression refers to pattern matching techniques, an application like regex, or an internal command in some coding language like =~ and !~ in Perl.
I can use regular expression to parse CSV, it is just not pretty. Regex solutions do not need to be single runs.
I frequently use regex in multiple iterations to clean up the data be it in code or command line, then process it for one off scenarios.
> This is because a regular expression doesn’t store state.
This depends on how much state I need to store and in what context (see first sentence).
Regular expressions are a very useful tool in a programmer’s toolbox. But they can’t do everything. And one of the things they can’t do is to reliably parse CSV (comma separated value) files. This is because a regular expression doesn’t store state. You need a state machine (or something equivalent) to parse a CSV file.
WaitWaitWha|3 years ago
I can use regular expression to parse CSV, it is just not pretty. Regex solutions do not need to be single runs.
I frequently use regex in multiple iterations to clean up the data be it in code or command line, then process it for one off scenarios.
> This is because a regular expression doesn’t store state.
This depends on how much state I need to store and in what context (see first sentence).
charly357|3 years ago
version_five|3 years ago
James_Henry|3 years ago