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77 lines
1.6 KiB
Markdown
77 lines
1.6 KiB
Markdown
# ring
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[](https://godoc.org/github.com/zfjagann/golang-ring)
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--
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import "github.com/zfjagann/golang-ring"
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Package ring provides a simple implementation of a ring buffer.
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## Usage
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```go
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var DefaultCapacity int = 10
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```
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The DefaultCapacity of an uninitialized Ring buffer.
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Changing this value only affects ring buffers created after it is changed.
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#### type Ring
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```go
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type Ring struct {
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}
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```
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Type Ring implements a Circular Buffer. The default value of the Ring struct is
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a valid (empty) Ring buffer with capacity DefaultCapacify.
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#### func (Ring) Capacity
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```go
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func (r Ring) Capacity() int
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```
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Capacity returns the current capacity of the ring buffer.
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#### func (*Ring) Dequeue
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```go
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func (r *Ring) Dequeue() interface{}
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```
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Dequeue a value from the Ring buffer.
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Returns nil if the ring buffer is empty.
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#### func (*Ring) Enqueue
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```go
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func (r *Ring) Enqueue(i interface{})
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```
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Enqueue a value into the Ring buffer.
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#### func (*Ring) Peek
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```go
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func (r *Ring) Peek() interface{}
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```
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Read the value that Dequeue would have dequeued without actually dequeuing it.
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Returns nil if the ring buffer is empty.
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#### func (*Ring) SetCapacity
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```go
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func (r *Ring) SetCapacity(size int)
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```
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Set the maximum size of the ring buffer.
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#### func (*Ring) Values
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```go
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func (r *Ring) Values() []interface{}
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```
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Values returns a slice of all the values in the circular buffer without
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modifying them at all. The returned slice can be modified independently of the
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circular buffer. However, the values inside the slice are shared between the
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slice and circular buffer.
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