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r? @aturon (rust_highfive has picked a reviewer for you, use r? to override) |
@bors r+ rollup |
📌 Commit 8a6a9af has been approved by |
@@ -11,7 +11,7 @@ | |||
#![allow(missing_docs)] | |||
#![allow(deprecated)] // Float | |||
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use std::cmp::Ordering::{self, Less, Greater, Equal}; | |||
use std::cmp::Ordering::{self, Equal, Greater, Less}; |
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Why not Less, Equal, Greater
? That makes the most sense to me.
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That's not alphabetical, which is how rustfmt appears to be sorting it.
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I understand, but I disagree with rustfmt
on this one.
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What about consistency?
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Well, the rule can be generalized to all enum
s by sorting variants by declaration order. This has the added benefit of inheriting any grouping that the author put in. Taking a few random examples from MIR to show how this rule would provide benefit:
rustc::mir::repr::TerminatorKind
has a few intuitive groups.Goto
,If
,Switch
, andSwitchInt
are basic branches, going to one of a list of possible targets based on a simple condition.Resume
andReturn
both signal exiting from some sort of scope, andDrop
,DropAndReplace
,Call
, andAssert
are all not inherently terminators, more like statements that can panic. By sorting by definition order, those groups would all be imported next to each other.rustc::mir::repr::Lvalue
is similarly grouped:Var
,Temp
, andArg
are function-local,Static
andReturnPointer
represent externally created variables, andProjection
is its own thing.rustc::mir::repr::BorrowKind
does not really have a division into groups. However, it is ordered by increasing permissions:Shared
pointers can't be guaranteed unique access and can't mutate,Unique
pointers form the in-between of unique access without mutability, andMut
pointers have all the permissions. Importing them in this order makes sense because it is the natural order to view the options in.
Essentially, developers already sort their enum
s in a logical, helpful way, and it makes sense to reuse that for import order.
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Worth filing an issue against rustfmt about this. My personal experience is that in 99% of cases, programmers don't order their imports and it's not worth the extra effort for the other 1%. In particular I'm not sure if it helps anybody - I agree the enum ordering is sensible, but I don't see any concrete benefit.
run rustfmt on libtest folder
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