Bottle.Number.is_non_neg_integer

You're seeing just the macro is_non_neg_integer, go back to Bottle.Number module for more information.
Link to this macro

is_non_neg_integer(sub)

View Source (macro)

Guard that passes when a number is a non_neg_integer

Examples

iex> is_non_neg_integer(1)
true

iex> is_non_neg_integer(1.1)
false

iex> is_non_neg_integer(0)
true

iex> is_non_neg_integer(-1)
false