rust/library
Matthias Krüger 17c65826d3
Rollup merge of #102628 - H4x5:master, r=scottmcm
Change the parameter name of From::from to `value`

The `From` trait is currently defined as:
```rust
pub trait From<T>: Sized {
    fn from(_: T) -> Self;
}
```

The name of the argument is `_`. I am proposing to change it to `value`, ie.
```rust
pub trait From<T>: Sized {
    fn from(value: T) -> Self;
}
```

This would be more consistent with the `TryFrom`, which looks like this:
```rust
pub trait TryFrom<T>: Sized {
    type Error;
    fn try_from(value: T) -> Result<Self, Self::Error>;
}
```

The reason for this proposal is twofold:
1. Consistency with the rest of the standard library. The `TryFrom` trait uses `value`, and no `From` implementation uses the default name (as it is quite useless).
2. When generating trait implementations with rust-analyzer/IntelliJ, the parameter name is copied, and it always has to be changed.

Optionally, another name like `x` could be used. I only propose `value` for consistency with `TryFrom`.

Changing parameter names is not a breaking change.

Note: this was originally posted as an internals thread [here](https://internals.rust-lang.org/t/change-the-argument-name-of-from-from/17480)
2022-10-04 06:14:12 +02:00
..
alloc Rollup merge of #99216 - duarten:master, r=joshtriplett 2022-10-03 20:58:53 +02:00
backtrace@07872f28cd Update backtrace 2022-09-02 16:09:58 -04:00
core Rollup merge of #102628 - H4x5:master, r=scottmcm 2022-10-04 06:14:12 +02:00
panic_abort Update comment about personalities in panic_abort 2022-08-23 16:12:58 +08:00
panic_unwind Auto merge of #92845 - Amanieu:std_personality, r=Mark-Simulacrum 2022-08-28 04:16:29 +00:00
portable-simd separate the receiver from arguments in HIR under /clippy 2022-09-05 22:25:57 +09:00
proc_macro Fix typo in proc_macro Span::eq 2022-09-17 19:15:30 -04:00
profiler_builtins
rtstartup Remove custom frame info registration on i686-pc-windows-gnu 2022-08-23 16:12:58 +08:00
rustc-std-workspace-alloc
rustc-std-workspace-core
rustc-std-workspace-std
std Auto merge of #98354 - camsteffen:is-some-and-by-value, r=m-ou-se 2022-10-02 12:48:15 +00:00
stdarch@699c093a42 Update stdarch 2022-09-15 13:05:28 -04:00
test Rollup merge of #100451 - hovinen:no-panic-on-result-err-in-test, r=Mark-Simulacrum 2022-10-02 20:42:20 +05:30
unwind unwind: don't build dependency when building for Miri 2022-08-15 12:54:12 -04:00