| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Sun, 31 Jan 2021 00:18:14 +0000 | |
| changeset 391 | 0930e4555b60 |
| child 424 | daf561a83ba6 |
| permissions | -rw-r--r-- |
|
391
0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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1 |
import CW9a._ |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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2 |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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3 |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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4 |
val f_urban = (x:(Int, Int)) => if (x._1 > 3) Some(List(x)) else None |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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5 |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
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6 |
assert(first(List((1,0),(2,0),(3,0),(4,0)), f_urban) == Some(List((4,0)))) |
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0930e4555b60
added main4 marking
Christian Urban <christian.urban@kcl.ac.uk>
parents:
diff
changeset
|
7 |
assert(first(List((1,0),(2,0),(3,0)), f_urban) == None) |