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+:

+:

scala.collection.`package`.+:

object +:

An extractor used to head/tail deconstruct sequences.

Attributes
Source
package.scala
Graph
Supertypes

class

Object

trait

Matchable

class

Any
Self type
+:

.

type
Members list

Value members

Concrete methods

def unapply

[

A

,

CC <:

(

Seq

),

C <: SeqOps

[

A

,

CC

,

C

]](

t

:

C & SeqOps

[

A

,

CC

,

C

]):

Option

[(

A

,

C

)]

Splits a sequence into head +: tail.

Splits a sequence into head +: tail.

Attributes
Returns

Some((head, tail)) if sequence is non-empty. None otherwise.

Source
package.scala

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