date manipulation library for erlang
Erlang
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Latest commit 640718e Apr 29, 2013 @dweldon Merge pull request #2 from jvliwanag/out_of_bounds_shift
added error handling for month shift prior to year 0.
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README.markdown

Overview

edate is a date manipulation library for erlang

Installation

git clone git://github.com/dweldon/edate.git
cd edate && make

Interface

The following examples give an overview of the edate interface. Please see the complete documentation by running make doc.

String Conversion

> edate:date_to_string({1976,3,18}).
"1976-03-18"

> edate:string_to_date("3/18/1976").
{1976,3,18}

Date Math

> edate:beginning_of_month({2010,2,15}).
{2010,2,1}

> edate:end_of_month({2010,2,15}).
{2010,2,28}

> edate:shift({2010,2,27}, 1, week).
{2010,3,6}

> edate:subtract(edate:tomorrow(), edate:yesterday()).
2

Comparison

> edate:is_after({1950,7,2}, {1950,7,1}).
true

> edate:is_before({1950,7,1}, {1950,7,2}).
true

> edate:is_in_future({3000,7,1}).
true

> edate:is_in_past({1950,7,1}).
true

Miscellaneous

> edate:day_of_week({2010,7,4}).
"sunday"