Skip to content

Zero is a real number (Flux.Nil) #1830

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Feb 5, 2022
Merged

Zero is a real number (Flux.Nil) #1830

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4f1b520
zero is real
mcabbott Jan 12, 2022
22a0b83
leq
mcabbott Jan 13, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 7 additions & 7 deletions src/outputsize.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,13 +4,14 @@ using NNlib
import Random

"""
Nil <: Number
nil = Nil()

Nil is a singleton type with a single instance `nil`.
Unlike `Nothing` and `Missing` it subtypes `Number`.
`Nil` is a singleton type with a single instance `nil`.
Unlike `Nothing` and `Missing` it is a number: `Nil <: Real <: Number`.
"""
struct Nil <: Number end
struct Nil <: Real end

@doc @doc(Nil)
const nil = Nil()

Nil(::T) where T<:Number = nil
Expand All @@ -30,9 +31,8 @@ for f in [:+, :-, :*, :/, :^, :mod, :div, :rem]
@eval Base.$f(::Nil, ::Nil) = nil
end

Base.isless(::Nil, ::Nil) = true
Base.isless(::Nil, ::Number) = true
Base.isless(::Number, ::Nil) = true
Base.:<(::Nil, ::Nil) = true
Base.:<=(::Nil, ::Nil) = true

Base.isnan(::Nil) = false
Base.isfinite(::Nil) = true
Expand Down