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.= assignment #285

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stevengj opened this issue Oct 6, 2016 · 4 comments · Fixed by #292
Closed

.= assignment #285

stevengj opened this issue Oct 6, 2016 · 4 comments · Fixed by #292

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@stevengj
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stevengj commented Oct 6, 2016

0.5 introduced x .= y etcetera for in-place assignment. It would be nice if @compat would translate this to copy!(x, y) in Julia 0.4.

Note that x[...] .= y should become x[...] = y.

Similarly for .+= and so on.
@stevengj
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stevengj commented Oct 6, 2016

(In 0.4, .= is parsed as a comparison.)

@TotalVerb
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Isn't the precedence wrong?

@stevengj
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stevengj commented Oct 6, 2016

Yes. But in most practical circumstances it shouldn't matter, I think, since comparisons have lower precedence than arithmetic.

@stevengj
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stevengj commented Oct 6, 2016 •
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And at worst, people needing 0.4 compatibility can add parens around the rhs.

stevengj added a commit that referenced this issue Dec 22, 2016
@stevengj
add @compat for .= (closes #285)
959f9eb
@stevengj stevengj mentioned this issue Dec 22, 2016
Merged
stevengj added a commit that referenced this issue Dec 22, 2016
@stevengj
add @compat for .= (closes #285)
7ef0dee
stevengj added a commit that referenced this issue Dec 22, 2016
@stevengj
add @compat for .= (closes #285)
51babd3
stevengj added a commit that referenced this issue Dec 28, 2016
@stevengj
add at-compat for .= (closes #285) (#292)
6d60600
dpsanders pushed a commit to dpsanders/Compat.jl that referenced this issue Feb 1, 2017
@stevengj @dpsanders
add at-compat for .= (closes JuliaLang#285) (JuliaLang#292)
dfa506a
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add @compat for .= JuliaLang/Compat.jl
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@stevengj @TotalVerb