Mixing
Unable to use object type as method argument in scala shell
0
The following code doesn't' work in scala shell, but it works in IDE, does anyone how can I use object type as method parameter in scala-shell, thanks.
scala> object A {
| }
defined object A
scala> def f(a:A) :Unit = {
| }
<console>:63: error: not found: type A
def f(a:A) :Unit = {
scala scala-repl
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
add a comment |
0
The following code doesn't' work in scala shell, but it works in IDE, does anyone how can I use object type as method parameter in scala-shell, thanks.
scala> object A {
| }
defined object A
scala> def f(a:A) :Unit = {
| }
<console>:63: error: not found: type A
def f(a:A) :Unit = {
scala scala-repl
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
Just a thought, a function that accepts a unique singleton as its sole argument, is it not just athunk?
– Yaneeve
Nov 21 '18 at 13:25
add a comment |
0
0
0
The following code doesn't' work in scala shell, but it works in IDE, does anyone how can I use object type as method parameter in scala-shell, thanks.
scala> object A {
| }
defined object A
scala> def f(a:A) :Unit = {
| }
<console>:63: error: not found: type A
def f(a:A) :Unit = {
scala scala-repl
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
The following code doesn't' work in scala shell, but it works in IDE, does anyone how can I use object type as method parameter in scala-shell, thanks.
scala> object A {
| }
defined object A
scala> def f(a:A) :Unit = {
| }
<console>:63: error: not found: type A
def f(a:A) :Unit = {
scala scala-repl
scala scala-repl
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
asked Nov 21 '18 at 12:32
zjffduzjffdu
6,6842579107
6,6842579107
Just a thought, a function that accepts a unique singleton as its sole argument, is it not just athunk?
– Yaneeve
Nov 21 '18 at 13:25
add a comment |
Just a thought, a function that accepts a unique singleton as its sole argument, is it not just athunk?
– Yaneeve
Nov 21 '18 at 13:25
Just a thought, a function that accepts a unique singleton as its sole argument, is it not just a
thunk?– Yaneeve
Nov 21 '18 at 13:25
Just a thought, a function that accepts a unique singleton as its sole argument, is it not just a
thunk?– Yaneeve
Nov 21 '18 at 13:25
add a comment |
2 Answers
2
active
oldest
votes
1
You can use Object.type like this:
scala> object A {}
defined object A
scala> def f(a: A.type) = println("hello world")
f: (a: A.type)Unit
scala> f(A)
hello world
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
add a comment |
0
Just add trait A :
trait A
object A extends A
def f(a:A) :Unit = { }
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
You can use Object.type like this:
scala> object A {}
defined object A
scala> def f(a: A.type) = println("hello world")
f: (a: A.type)Unit
scala> f(A)
hello world
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
add a comment |
1
You can use Object.type like this:
scala> object A {}
defined object A
scala> def f(a: A.type) = println("hello world")
f: (a: A.type)Unit
scala> f(A)
hello world
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
add a comment |
1
1
1
You can use Object.type like this:
scala> object A {}
defined object A
scala> def f(a: A.type) = println("hello world")
f: (a: A.type)Unit
scala> f(A)
hello world
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
You can use Object.type like this:
scala> object A {}
defined object A
scala> def f(a: A.type) = println("hello world")
f: (a: A.type)Unit
scala> f(A)
hello world
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
answered Nov 21 '18 at 12:41
Mahmoud HanafyMahmoud Hanafy
97011528
97011528
add a comment |
add a comment |
0
Just add trait A :
trait A
object A extends A
def f(a:A) :Unit = { }
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
add a comment |
0
Just add trait A :
trait A
object A extends A
def f(a:A) :Unit = { }
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
add a comment |
0
0
0
Just add trait A :
trait A
object A extends A
def f(a:A) :Unit = { }
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
Just add trait A :
trait A
object A extends A
def f(a:A) :Unit = { }
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
answered Nov 21 '18 at 12:38
Vladimir BerezkinVladimir Berezkin
1,65842030
1,65842030
add a comment |
add a comment |
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Just a thought, a function that accepts a unique singleton as its sole argument, is it not just a
thunk?– Yaneeve
Nov 21 '18 at 13:25