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Use Val(x) and f(::Val{x}) #22475

Merged
merged 2 commits into from
Jul 6, 2017
Merged

Use Val(x) and f(::Val{x}) #22475

merged 2 commits into from
Jul 6, 2017

Commits on Jul 5, 2017

  1. Use Val(x) and f(::Val{x}) 

    Replaces `f(Val{x})` on call sites with `f(Val(x))`, using a new
`@pure` function `Val(x) = Val{x}()`. This simplifies the method
definitions from `f(::Type{Val{x}}) where x` to `f(::Val{x}) where x`.

This form also has the advantage that multiple singleton instances
can be put in a tuple and inference will work (similarly with
multiple-return functions).
    @andyferris
    andyferris authored and Andy Ferris committed Jul 5, 2017
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  2. Update manual for Val(x) instance usage

    Andy Ferris committed Jul 5, 2017
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