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tpl/collections: Allow first function to return an empty slice
Fixes #5235
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3 changed files with 5 additions and 2 deletions
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@ -25,3 +25,5 @@ aliases: []
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{{ .Render "summary" }}
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{{ end }}
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```
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*Note: Exclusive to `first`, LIMIT can be '0' to return an empty array.*
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@ -215,8 +215,8 @@ func (ns *Namespace) First(limit interface{}, seq interface{}) (interface{}, err
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return nil, err
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}
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if limitv < 1 {
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return nil, errors.New("can't return negative/empty count of items from sequence")
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if limitv < 0 {
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return nil, errors.New("can't return negative count of items from sequence")
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}
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seqv := reflect.ValueOf(seq)
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@ -256,6 +256,7 @@ func TestFirst(t *testing.T) {
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{int64(2), []int{100, 200, 300}, []int{100, 200}},
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{100, []int{100, 200}, []int{100, 200}},
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{"1", []int{100, 200, 300}, []int{100}},
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{0, []string{"h", "u", "g", "o"}, []string{}},
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{int64(-1), []int{100, 200, 300}, false},
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{"noint", []int{100, 200, 300}, false},
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{1, nil, false},
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