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27 lines
861 B
Markdown
27 lines
861 B
Markdown
# Comparing DateTime Structs
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> Remember, comparisons in Elixir using ==/2, >/2, </2 and friends are
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> structural and based on the DateTime struct fields. For proper comparison
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> between datetimes, use the compare/2 function.
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As the [DateTime docs](https://hexdocs.pm/elixir/DateTime.html) say, you'll
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want to use [`compare/2`](https://hexdocs.pm/elixir/DateTime.html#compare/2)
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in order to accurately compare two `DateTime` structs.
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```elixir
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{:ok, older} = DateTime.from_naive(~N[2016-05-24 13:26:08.003], "Etc/UTC")
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{:ok, newer} = DateTime.from_naive(~N[2017-11-24 13:26:08.003], "Etc/UTC")
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DateTime.compare(older, newer)
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#=> :lt
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DateTime.compare(newer, older)
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#=> :gt
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DateTime.compare(newer, newer)
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#=> :eq
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```
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When using `compare/2`, you'll get one of `:lt`, `:gt`, or `:eq` as a
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result, meaning _less than_, _greater than_, or _equal_ respectively.
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