Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Fix typo #283

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Fix typo #283

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/sixth-panics.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -80,7 +80,7 @@ In this case, we have two options to make our code a bit more robust:

* Kill the debug_asserts and trust ourselves to write better tests with dedicated "integrity check" functions that won't run in user code ever.

In principle I like the first option, but it doesn't actually work great for a doubly-linked list, because everything is doubly-redundantly encoded. Option::take wouldn't fix the problem here, but moving the debug_assert down a line would. But really, why make things harder for ourselves? Let's just remove those debug_asserts, and make sure anything can panic is at the start or end of our methods, where our invariants should be known to hold.
In principle I like the first option, but it doesn't actually work great for a doubly-linked list, because everything is doubly-redundantly encoded. Option::take wouldn't fix the problem here, but moving the debug_assert down a line would. But really, why make things harder for ourselves? Let's just remove those debug_asserts, and make sure anything that can panic is at the start or end of our methods, where our invariants should be known to hold.

(In this way it's perhaps more accurate to think of them as *preconditions* and *postconditions* but you really should endeavour to treat them as invariants as much as possible!)

Expand Down