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add compat annotation for map!(f, values(dict)) (from #31223) #35184

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Mar 20, 2020
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add compat annotation for map!(f, values(dict)) (from #31223) #35184

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1 change: 1 addition & 0 deletions HISTORY.md
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Expand Up @@ -340,6 +340,7 @@ New library functions
* Added `Base.hasproperty` and `Base.hasfield` ([#28850]).
* One argument `!=(x)`, `>(x)`, `>=(x)`, `<(x)`, `<=(x)` have been added, returning partially-applied
versions of the functions, similar to the existing `==(x)` and `isequal(x)` methods ([#30915]).
* The new `map!(f, values(::AbstractDict))` method allows to modify in-place values of a dictionary ([#31223]).

Standard library changes
------------------------
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3 changes: 3 additions & 0 deletions base/abstractdict.jl
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Expand Up @@ -560,6 +560,9 @@ Modifies `dict` by transforming each value from `val` to `f(val)`.
Note that the type of `dict` cannot be changed: if `f(val)` is not an instance of the value type
of `dict` then it will be converted to the value type if possible and otherwise raise an error.

!!! compat "Julia 1.2"
`map!(f, values(dict::AbstractDict))` requires Julia 1.2 or later.

# Examples
```jldoctest
julia> d = Dict(:a => 1, :b => 2)
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