odohMei7
Shorter scientific notation like "1.01e5" instead of "1.01e+05" (:erlang.float_to_binary)
Hi
I would like to know if/how I can format a float in shorter scientific notation than what :erlang.float_to_binary gives me. For example
iex(1)> 1012.670|>:erlang.float_to_binary(scientific: 2)
"1.01e+03"
But I want “1.01e3”. Is this possible? I tried to combine Float.round and Float.to_string but this does not necessarily give scientific notation. Thank you.
Marked As Solved
kip
You can do that with ex_cldr_numbers but you probably wouldn’t use it if this is the only requirement (I’m the author).
iex> Cldr.Number.to_string 1012.670, format: "0.00E+0"
{:ok, "1.01E+3"}
Also Liked
rvirding
I don’t think that this is possible. If you check the documentation for :erlang.float_to_list/2 you can see what the options give you. An alternative could be to use Erlang formatted output but I can’t remember how the options work.
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