7 kyu
Confusing syntax
30 of 55mhimmel
Loading description...
Theorem Proving
Fundamentals
This comment has been reported as {{ abuseKindText }}.
Show
This comment has been hidden. You can view it now .
This comment can not be viewed.
- |
- Reply
- Edit
- View Solution
- Expand 1 Reply Expand {{ comments?.length }} replies
- Collapse
- Spoiler
- Remove
- Remove comment & replies
- Report
{{ fetchSolutionsError }}
-
-
Your rendered github-flavored markdown will appear here.
-
Label this discussion...
-
No Label
Keep the comment unlabeled if none of the below applies.
-
Issue
Use the issue label when reporting problems with the kata.
Be sure to explain the problem clearly and include the steps to reproduce. -
Suggestion
Use the suggestion label if you have feedback on how this kata can be improved.
-
Question
Use the question label if you have questions and/or need help solving the kata.
Don't forget to mention the language you're using, and mark as having spoiler if you include your solution.
-
No Label
- Cancel
Commenting is not allowed on this discussion
You cannot view this solution
There is no solution to show
Please sign in or sign up to leave a comment.
Coq translation
Approved
I'm new to Lean Codewars. I'm used to fill ∃ quantifiers with the
usetactic, but the Codewars Lean doesn't seem to know it:How do I solve such a kata here on Codewars? My code works in my "regular" Lean environment.
Turns out I had to
import tacticfirst. Now it works.You can use
existsiinstead ofuse.