Merge pull request #524 from JuliaDiff/invalidations

Remove major invalidations from ==

Author: ChrisRackauckas

Project.toml

@@ -1,6 +1,6 @@
 name = "ChainRulesCore"
 uuid = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
-version = "1.13.0"
+version = "1.14.0"
 
 [deps]
 Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"

src/tangent_types/thunks.jl

@@ -25,8 +25,6 @@ end
 end
 
 Base.:(==)(a::AbstractThunk, b::AbstractThunk) = unthunk(a) == unthunk(b)
-Base.:(==)(a::AbstractThunk, b) = unthunk(a) == b
-Base.:(==)(a, b::AbstractThunk) = a == unthunk(b)
 
 Base.:(-)(a::AbstractThunk) = -unthunk(a)
 Base.:(-)(a::AbstractThunk, b) = unthunk(a) - b

test/tangent_types/thunks.jl

@@ -5,8 +5,6 @@
 
     @testset "==" begin
         @test @thunk(3.2) == InplaceableThunk(x -> x + 3.2, @thunk(3.2))
-        @test @thunk(3.2) == 3.2
-        @test 3.2 == InplaceableThunk(x -> x + 3.2, @thunk(3.2))
     end
 
     @testset "iterate" begin