a41f938cec
As we have seen, dependencies version can prevent the build. We should user lock versions on dependencies that we know work: * Packages are vendored * Add Godep support * Added addtional install step in readme * Fix travis build error
57 lignes
1,1 Kio
Go
57 lignes
1,1 Kio
Go
package iter
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import "github.com/anacrolix/missinggo/slices"
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type Iterator interface {
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// Advances to the next value. Returns false if there are no more values.
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// Must be called before the first value.
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Next() bool
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// Returns the current value. Should panic when the iterator is in an
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// invalid state.
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Value() interface{}
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// Ceases iteration prematurely. This should occur implicitly if Next
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// returns false.
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Stop()
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}
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type sliceIterator struct {
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slice []interface{}
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value interface{}
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ok bool
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}
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func (me *sliceIterator) Next() bool {
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if len(me.slice) == 0 {
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return false
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}
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me.value = me.slice[0]
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me.slice = me.slice[1:]
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me.ok = true
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return true
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}
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func (me *sliceIterator) Value() interface{} {
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if !me.ok {
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panic("no value; call Next")
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}
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return me.value
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}
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func (me *sliceIterator) Stop() {}
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func Slice(a []interface{}) Iterator {
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return &sliceIterator{
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slice: a,
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}
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}
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func StringIterator(a string) Iterator {
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return Slice(slices.ToEmptyInterface(a))
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}
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func ToSlice(it Iterator) (ret []interface{}) {
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for it.Next() {
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ret = append(ret, it.Value())
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}
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return
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}
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