README
¶
Strain
Implement the keep and discard operation on collections. Given a collection
and a predicate on the collection's elements, keep returns a new collection
containing those elements where the predicate is true, while discard returns
a new collection containing those elements where the predicate is false.
For example, given the collection of numbers:
- 1, 2, 3, 4, 5
And the predicate:
- is the number even?
Then your keep operation should produce:
- 2, 4
While your discard operation should produce:
- 1, 3, 5
Note that the union of keep and discard is all the elements.
The functions may be called keep and discard, or they may need different
names in order to not clash with existing functions or concepts in your
language.
Restrictions
Keep your hands off that filter/reject/whatchamacallit functionality provided by your standard library! Solve this one yourself using other basic tools instead.
Running the tests
To run the tests run the command go test from within the exercise directory.
If the test suite contains benchmarks, you can run these with the -bench
flag:
go test -bench .
Keep in mind that each reviewer will run benchmarks on a different machine, with different specs, so the results from these benchmark tests may vary.
Further information
For more detailed information about the Go track, including how to get help if you're having trouble, please visit the exercism.io Go language page.
Source
Conversation with James Edward Gray II https://twitter.com/jeg2
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
Documentation
Source Files