Fix 0.6 depwarns

[yuyichao]

No description provided.

[codecov-io]

Codecov Report

Merging #268 into master will not change coverage.

@@           Coverage Diff           @@
##           master     #268   +/-   ##
=======================================
  Coverage   95.86%   95.86%           
=======================================
  Files          30       30           
  Lines        2223     2223           
=======================================
  Hits         2131     2131           
  Misses         92       92

Impacted Files	Coverage Δ
src/trie.jl	93.22% <100%> (ø)	✅
src/disjoint_set.jl	97.87% <100%> (ø)	✅
src/heaps/binary_heap.jl	100% <100%> (ø)	✅
src/circular_buffer.jl	100% <100%> (ø)	✅
src/balanced_tree.jl	100% <100%> (ø)	✅
src/deque.jl	100% <100%> (ø)	✅
src/ordered_set.jl	98.14% <100%> (ø)	✅
src/sorted_multi_dict.jl	92.45% <100%> (ø)	✅
src/heaps/mutable_binary_heap.jl	92.66% <100%> (ø)	✅
src/sorted_set.jl	94.15% <100%> (ø)	✅
... and 5 more

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[kmsquire]

Hi @yuyichao, I can probably find it, but could you point to the change in Base that requires this? I think it significantly detracts from readability, and want to discuss that more in the original issue. (Will look for it later if you don't respond.)

[yuyichao]

The corresponding PR is JuliaLang/julia#20308, which does not require this syntax but this is the simplest way I can find to make it work on old versions.

[yuyichao]

Note that it is possible to get some form of the new syntax to work on old versions but it'll either require duplicating the code or quite involved hack in @compat. Given that the ::Type{...} trick works and seems to be accepted by people so far, I'm not too excited about implementing anything fancy in @compat now.....