Bottle.Number.is_non_neg_number
You're seeing just the macro
is_non_neg_number
, go back to Bottle.Number module for more information.
Guard that passes when a number is a non_neg_number
Examples
iex> is_non_neg_number(1)
true
iex> is_non_neg_number(1.1)
true
iex> is_non_neg_number(0)
true
iex> is_non_neg_number(-1)
false