How to getOrElse with another Option in Scala
up vote
0
down vote
favorite
Let's assume that we have an option foo1 and an option foo2:
val foo1: Option[Foo]
val foo2: Option[Foo]
Is there an operator/function that allows me to return the value of the foo2 when foo1 is None?
val finalFoo: Option[Foo] = foo1.getOrElseOption(foo2)
The above getOrElseOption does not exist obviously. I know we can do sth like this, but it is somewhat verbose and hard to understand:
foo1.map(Some(_)).getOrElse(foo2).
scala option partial-functions
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
add a comment |
up vote
0
down vote
favorite
Let's assume that we have an option foo1 and an option foo2:
val foo1: Option[Foo]
val foo2: Option[Foo]
Is there an operator/function that allows me to return the value of the foo2 when foo1 is None?
val finalFoo: Option[Foo] = foo1.getOrElseOption(foo2)
The above getOrElseOption does not exist obviously. I know we can do sth like this, but it is somewhat verbose and hard to understand:
foo1.map(Some(_)).getOrElse(foo2).
scala option partial-functions
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
4
orElse
– Andrey Tyukin
Nov 19 at 22:12
What aboutorElse?
– Luis Miguel Mejía Suárez
Nov 19 at 22:12
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Let's assume that we have an option foo1 and an option foo2:
val foo1: Option[Foo]
val foo2: Option[Foo]
Is there an operator/function that allows me to return the value of the foo2 when foo1 is None?
val finalFoo: Option[Foo] = foo1.getOrElseOption(foo2)
The above getOrElseOption does not exist obviously. I know we can do sth like this, but it is somewhat verbose and hard to understand:
foo1.map(Some(_)).getOrElse(foo2).
scala option partial-functions
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
Let's assume that we have an option foo1 and an option foo2:
val foo1: Option[Foo]
val foo2: Option[Foo]
Is there an operator/function that allows me to return the value of the foo2 when foo1 is None?
val finalFoo: Option[Foo] = foo1.getOrElseOption(foo2)
The above getOrElseOption does not exist obviously. I know we can do sth like this, but it is somewhat verbose and hard to understand:
foo1.map(Some(_)).getOrElse(foo2).
scala option partial-functions
scala option partial-functions
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
edited Nov 19 at 22:16
Andrey Tyukin
25.5k42246
25.5k42246
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
asked Nov 19 at 22:09
Yuchen Zhong
11.3k777122
11.3k777122
4
orElse
– Andrey Tyukin
Nov 19 at 22:12
What aboutorElse?
– Luis Miguel Mejía Suárez
Nov 19 at 22:12
add a comment |
4
orElse
– Andrey Tyukin
Nov 19 at 22:12
What aboutorElse?
– Luis Miguel Mejía Suárez
Nov 19 at 22:12
4
4
orElse
– Andrey Tyukin
Nov 19 at 22:12
orElse
– Andrey Tyukin
Nov 19 at 22:12
What about
orElse ?– Luis Miguel Mejía Suárez
Nov 19 at 22:12
What about
orElse ?– Luis Miguel Mejía Suárez
Nov 19 at 22:12
add a comment |
1 Answer
1
active
oldest
votes
up vote
8
down vote
accepted
Option works a bit like a partial function, so orElse will do what you want:
foo1 orElse foo2
answered Nov 19 at 22:12
Tim
3,9811316
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
8
down vote
accepted
Option works a bit like a partial function, so orElse will do what you want:
foo1 orElse foo2
answered Nov 19 at 22:12
Tim
3,9811316
add a comment |
up vote
8
down vote
accepted
Option works a bit like a partial function, so orElse will do what you want:
foo1 orElse foo2
answered Nov 19 at 22:12
Tim
3,9811316
add a comment |
up vote
8
down vote
accepted
up vote
8
down vote
accepted
Option works a bit like a partial function, so orElse will do what you want:
foo1 orElse foo2
answered Nov 19 at 22:12
Tim
3,9811316
Option works a bit like a partial function, so orElse will do what you want:
foo1 orElse foo2
answered Nov 19 at 22:12
Tim
3,9811316
answered Nov 19 at 22:12
Tim
3,9811316
answered Nov 19 at 22:12
Tim
3,9811316
answered Nov 19 at 22:12
Tim
3,9811316
3,9811316
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53383347%2fhow-to-getorelse-with-another-option-in-scala%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
4
orElse
– Andrey Tyukin
Nov 19 at 22:12
What about
orElse?– Luis Miguel Mejía Suárez
Nov 19 at 22:12