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42 lines
846 B
Go
42 lines
846 B
Go
package arrays
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import (
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"context"
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"github.com/MontFerret/ferret/pkg/runtime/core"
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"github.com/MontFerret/ferret/pkg/runtime/values"
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"github.com/MontFerret/ferret/pkg/runtime/values/types"
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)
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// Shift returns a new array without the first element.
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// @param array (Array) - Target array.
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// @returns (Array) - Copy of an array without the first element.
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func Shift(_ context.Context, args ...core.Value) (core.Value, error) {
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err := core.ValidateArgs(args, 1, 1)
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if err != nil {
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return values.None, err
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}
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err = core.ValidateType(args[0], types.Array)
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if err != nil {
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return values.None, err
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}
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arr := args[0].(*values.Array)
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length := int(arr.Length())
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result := values.NewArray(length)
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arr.ForEach(func(value core.Value, idx int) bool {
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if idx != 0 {
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result.Push(value)
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}
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return true
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})
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return result, nil
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}
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