32 lines
789 B
Go
32 lines
789 B
Go
package gomap
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// The Iterator is a small struct
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// used for handling iterator-like usage.
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// Go itself does not support the while loop,
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// however, we can achieve similar usage recursively.
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type Iterator struct {
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// The elements.
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elements *[]interface{}
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// The current index.
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current int
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// The current value.
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Value interface{}
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}
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// Next gets the next value in the iterator
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func (it *Iterator) Next() (bool, interface{}) {
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if it.elements == nil {
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return false, nil
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}
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// If there are no more values left, return false and nothing.
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if len(*it.elements) <= it.current+1 {
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return false, nil
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}
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// Upgrade the current index.
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it.current = it.current + 1
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// Set the current value.
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it.Value = (*it.elements)[it.current]
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// Return true, and the value.
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return true, it.Value
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}
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