Use $ to eagerly evaluate expressions in @~

[tkf]

With this PR, you can use @~ A .+ $Ref(x) to eagerly evaluate the sub-expression Ref(x).

[tkf]

This test is failing:

LazyArrays.jl/test/lazymultests.jl

Line 165 in 7336bc5

@test apply(*,A,x) == apply(*,Array(A),x) == apply(*,A,Array(x)) == Array(A)*Array(x)

https://travis-ci.org/JuliaArrays/LazyArrays.jl/jobs/628247559#L302

But I don't understand why changing the macro definition would change this test. Also, I can't reproduce this locally with Pkg.test(coverage=true)... Any idea how to fix this?

[dlfivefifty]

Just change it to ≈: there's no reason to assume it should be ==: Array multiplication uses BLAS while the other doesn't.

I have no idea why an unrelated change would trigger this, and only on two builds though.

[codecov]

Codecov Report

Merging #90 into master will increase coverage by 0.43%.
The diff coverage is 82.35%.

@@            Coverage Diff             @@
##           master      #90      +/-   ##
==========================================
+ Coverage   77.41%   77.84%   +0.43%     
==========================================
  Files          14       14              
  Lines        1160     1169       +9     
==========================================
+ Hits          898      910      +12     
+ Misses        262      259       -3

Impacted Files	Coverage Δ
src/LazyArrays.jl	66.66% <0%> (-33.34%)	⬇️
src/lazyapplying.jl	62.93% <50%> (+0.26%)	⬆️
src/lazyconcat.jl	83.81% <75%> (+0.09%)	⬆️
src/cache.jl	95.32% <80%> (+6%)	⬆️
src/linalg/lazymul.jl	89.36% <88.88%> (+1.36%)	⬆️
src/lazybroadcasting.jl	77.89% <92.3%> (-2.33%)	⬇️

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[tkf]

Thanks, using ≈ helps.

[dlfivefifty]

Let me know when you want this merged

[tkf]

It's good to go for me.