Authors: Dmitry Groshev (lambdadmitry@gmail.com), Sergei Levedev (superbobry@gmail.com).
tempo is a library for parsing and formatting dates in
Erlang. It provides a clean and nice interface to libc's
strptime and
strftime functions,
which are unfortunately missing from Erlang's standard library.
Yes.
The only two functions you have to remember are tempo:parse/2
and tempo:format/2. Here are some examples:
1> {ok, Bin} = tempo:format(iso8601, {now, now()}).
{ok,<<"2016-01-11T19:25:26Z">>}
2> tempo:parse(iso8601, {datetime, Bin}).
{ok,{{2016,1,11},{19,25,26}}}
As you might have noticed, both of the functions follow a common
pattern -- Format first, then a Value, tagged by its actual
or expected type. Predefined formats include: iso8601, rfc1123,
and rfc2822, but in fact, you can use any format, as long as it
follows libc conventions:
(tempo_dev@localhost)1> {ok, Bin} = tempo:format(<<"%A, %Y-%d-%m">>, {now, now()}).
{ok,<<"Thursday, 2012-07-06">>}
Unfortunately, dealing with time on various platforms is messy, so limitations are unavoidable. Here's a shortlist of those we know of:
- Parsing years before
1900causes a{error, format_mismatch}on OS X.
| tempo |