43 lines
1020 B
Go
43 lines
1020 B
Go
package model
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import "fmt"
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// Index returns node by index from array
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func (n *Node) Index(idx int) (*Node, error) {
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arrlen := len(n.arrayValue)
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if idx >= arrlen {
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return nil, fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
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}
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return n.arrayValue[idx], nil
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}
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// SetIndex sets node to array by index
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func (n *Node) SetIndex(idx int, value *Node) error {
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arrlen := len(n.arrayValue)
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if idx >= arrlen {
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return fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
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}
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n.arrayValue[idx] = value
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return nil
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}
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// Each applies callback to each element of array
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func (n *Node) Each(cb func(idx int, value *Node) error) error {
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for i, v := range n.arrayValue {
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if err := cb(i, v); err != nil {
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return err
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}
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}
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return nil
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}
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// RemoveIndex from array
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func (n *Node) RemoveIndex(idx int) error {
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arrlen := len(n.arrayValue)
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if idx >= arrlen {
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return fmt.Errorf("index %d out of range (len=%d)", idx, arrlen)
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}
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n.arrayValue = append(n.arrayValue[:idx], n.arrayValue[idx:]...)
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return nil
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}
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