https://github.com/michaelhatherly/contenthashes.jl

Julia package to hash any object by its content.
https://github.com/michaelhatherly/contenthashes.jl

hashing julia

Last synced: about 1 month ago
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Julia package to hash any object by its content.

• Host: GitHub
• URL: https://github.com/michaelhatherly/contenthashes.jl
• Owner: MichaelHatherly
• License: mit
• Created: 2021-10-06T14:47:29.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2024-04-01T21:12:08.000Z (9 months ago)
• Last Synced: 2024-11-02T05:05:29.517Z (2 months ago)
• Topics: hashing, julia
• Language: Julia
• Homepage:
• Size: 26.4 KB
• Stars: 7
• Watchers: 3
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ContentHashes

A generic object hashing implementation that hashes the exact content of

objects in *all* cases rather than using the (much faster) `objectid`. This can

be useful when you want to know whether two distinct objects do in fact contain

the same content without having to implement custom `Base.hash` methods that do

the comparisons manually. You may also not actually "own" the types which you

would need to implement `Base.hash` for, which would be type-piracy.

## Usage

Use the `ContentHashes.hash` function to hash any objects. This `hash` function

is not exported so that it won't conflict with the `Base.hash` function.

```

julia> using ContentHashes

julia> struct T

           x

       end

julia> a = T([]);

julia> b = T([]);

julia> hash(a) === hash(b)

false

julia> ContentHashes.hash(a) === ContentHashes.hash(b)

true

julia> f = x -> x + 1

#1 (generic function with 1 method)

julia> g = x -> x + 1

#3 (generic function with 1 method)

julia> hash(f) === hash(g)

false

julia> ContentHashes.hash(f) === ContentHashes.hash(g)

true

```