Merge pull request #381 from smldis/patch-1

add `empty!(::Stack)` method
JuliaCollections · May 8, 2018 · 691caea · 691caea
2 parents 0d2ef74 + 3112ac8
commit 691caea
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diff --git a/src/stack.jl b/src/stack.jl
@@ -19,6 +19,8 @@ end
 
 pop!(s::Stack) = pop!(s.store)
 
+empty!(s::Stack) = (empty!(s.store); s)
+
 start(st::Stack) = start(reverse_iter(st.store))
 next(st::Stack, s) = next(reverse_iter(st.store), s)
 done(st::Stack, s) = done(reverse_iter(st.store), s)

diff --git a/test/test_stack_and_queue.jl b/test/test_stack_and_queue.jl
@@ -30,6 +30,10 @@
         @test isempty(s) == (i == n)
         @test length(s) == n - i
     end
+
+    s = Stack(Int,1)
+    push!(s, 10)
+    @test length(empty!(s)) == 0
 
     #test that iter returns a LIFO collection