33 lines
672 B
Lua
33 lines
672 B
Lua
local m = rb_map()
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for i = 1, 100 do
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m:insert(i, i * 3)
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end
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local prev_k = nil
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-- It is safe to add/erase elements from m while we are traversing.
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-- The for_each method will traverse the elements that are in m
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-- when the for_each is invoked
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m:for_each(
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function(k, v)
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if prev_k then
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assert(prev_k < k)
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end
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print(k .. " -> " .. v)
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prev_k = k
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m:insert(-k, v)
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end
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)
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assert(m:size() == 200)
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m2 = m:copy()
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m:for_each(
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function(k, v)
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assert(m2:contains(-k))
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assert(m2:find(-k) == v)
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if k > 0 then
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m:erase(k)
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end
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end
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)
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assert(m:size() == 100)
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m:for_each(function(k, v) assert(k < 0) end)
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