Document some pattern restrictions.

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Documentation
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust
Domain
documentation

Research direction

Start by locating the pattern-checking code containing check_legality_of_move_bindings and check_legality_of_bindings_in_at_patterns, then review the restrictions they enforce. Use E0009, which prohibits mixing by-move and by-ref bindings in one pattern, as the initial example. Done means the applicable pattern restrictions are documented in the Rust Reference.

Written by the indexing model from the issue text.

Description

A-patterns

I have the suspicion there are a lot of restrictions for patterns that are undocumented.

One example: E0009 where a pattern "cannot bind by-move and by-ref in the same pattern"
See all the restrictions in check_legality_of_move_bindings and check_legality_of_bindings_in_at_patterns.

Dominant language
Rust
Stars
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Forks
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Avg merge
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Merged PRs (30d)
12

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