finagle-clojure.options

Functions for working with scala.Option objects.

empty?

(empty? o)

Does Option o have a value? Returns true if so, false otherwise.

Arguments:

  • o: an Option

Returns:

true if v is None, false otherwise

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get

(get o)

Returns the value wrapped by o. Although the Scala implementation throws a Predef.NoSuchElementException if called on an empty Option, Clojure generally avoids throwing on empty gets, instead preferring to return nil. This function adopts the Clojure behavior, choosing to treat this effectively as a call to getOrNull.

Arguments:

  • o: an Option

Returns:

the Option’s value if non-empty, nil otherwise

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option

(option)(option v)

Returns an Option with the given value v.

Arguments:

  • v: the value that the new Option should be defined with.

Returns:

Some(v) if v is present and non-null, None otherwise

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