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feat: add reduce for iterator

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dudaodong
2022-12-26 16:55:24 +08:00
parent b9f0854950
commit b06fb6736d
2 changed files with 19 additions and 0 deletions
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8
iterator/operation_test.go
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@@ -52,3 +52,11 @@ func TestJoinIterator(t *testing.T) {
assert.Equal([]int{2, 3, 4}, ToSlice(iter))
}
func TestReduce(t *testing.T) {
assert := internal.NewAssert(t, "TestReduce")
iter := FromSlice([]int{1, 2, 3, 4})
sum := Reduce(iter, 0, func(a, b int) int { return a + b })
assert.Equal(10, sum)
}