回答編集履歴
3
微修正
answer
CHANGED
|
@@ -1,7 +1,7 @@
|
|
|
1
1
|
こういうことでしょうか。
|
|
2
2
|
|
|
3
3
|
```js
|
|
4
|
-
const f = (foo, bar) =>
|
|
4
|
+
const f = (foo, bar) => v => (x => x != null ? x : bar(v))(foo(v))
|
|
5
5
|
|
|
6
6
|
f((x => 0), (x => 2 * x))(10)
|
|
7
7
|
// 0
|
2
修正
answer
CHANGED
|
@@ -1,7 +1,7 @@
|
|
|
1
1
|
こういうことでしょうか。
|
|
2
2
|
|
|
3
3
|
```js
|
|
4
|
-
const f = (foo, bar) => (v) => (
|
|
4
|
+
const f = (foo, bar) => (v) => (x => x != null ? x : bar(v))(foo(v));
|
|
5
5
|
|
|
6
6
|
f((x => 0), (x => 2 * x))(10)
|
|
7
7
|
// 0
|
1
修正
answer
CHANGED
|
@@ -2,7 +2,7 @@
|
|
|
2
2
|
|
|
3
3
|
```js
|
|
4
4
|
const f = (foo, bar) => (v) => ((x, y) => x != null ? x : y)(foo(v), bar(v));
|
|
5
|
-
|
|
5
|
+
|
|
6
6
|
f((x => 0), (x => 2 * x))(10)
|
|
7
7
|
// 0
|
|
8
8
|
f((x => null), (x => 2 * x))(10)
|