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feat(lua): add Iter:unique() (#37592)

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This commit is contained in:
Olivia Kinnear
2026-02-10 11:43:47 -06:00
committed by GitHub
parent 14c708634e
commit 0c46ea7d38
6 changed files with 122 additions and 7 deletions
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17
test/functional/lua/iter_spec.lua
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@@ -581,6 +581,23 @@ describe('vim.iter', function()
matches(flat_err, pcall_err(nested_non_lists.flatten, nested_non_lists, math.huge))
end)
it('unique()', function()
eq({ 1, 2, 3, 4, 5 }, vim.iter({ 1, 2, 2, 3, 4, 4, 5 }):unique():totable())
eq(
{ 1, 2, 3, 4, 5 },
vim.iter({ 1, 2, 3, 4, 4, 5, 1, 2, 3, 2, 1, 2, 3, 4, 5 }):unique():totable()
)
eq(
{ { 1 }, { 2 }, { 3 } },
vim
.iter({ { 1 }, { 1 }, { 2 }, { 2 }, { 3 }, { 3 } })
:unique(function(x)
return x[1]
end)
:totable()
)
end)
it('handles map-like tables', function()
local it = vim.iter({ a = 1, b = 2, c = 3 }):map(function(k, v)
if v % 2 ~= 0 then