Yuki Okushi 961d51dcbb Rollup merge of #66292 - lzutao:result-map_or, r=SimonSapin ...

add Result::map_or

This PR adds this API to make it consistent with `Option::map_or`.

```rust
impl<T, E> Result<T, E> {
    pub fn map_or<U, F: FnOnce(T) -> U>(self, default: U, f: F) -> U {
        match self {
            Ok(t) => f(t),
            Err(_) => default,
        }
    }
}
```

This API is very small. We already has a similar API for `Option::map_or`.

2019-11-13 22:09:20 +09:00

..

array

Snap cfgs

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benches

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

char

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

fmt

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

future

Use associated_type_bounds where applicable - closes #61738

2019-08-08 22:39:15 +02:00

hash

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

iter

Rollup merge of #66094 - ArturKovacs:fix-count-doc, r=Dylan-DPC

2019-11-13 22:09:11 +09:00

mem

Rollup merge of #66217 - RalfJung:diagnostic-items, r=Centril

2019-11-10 09:27:19 +09:00

num

remove vestigial comments referring to defunct numeric trait hierarchy

2019-11-08 13:51:07 -08:00

ops

Snap cfgs

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prelude

Move the matches! macro to the prelude

2019-10-23 15:35:36 +02:00

ptr

Snap cfgs

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slice

Rollup merge of #63793 - oli-obk:🧹, r=dtolnay

2019-11-07 14:27:20 +01:00

str

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

sync

Snap cfgs

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task

Fix typo

2019-10-12 15:18:17 +02:00

tests

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

unicode

it's more pythonic to use 'is not None' in python files

2019-09-06 15:14:25 +08:00

alloc.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

any.rs

Halloween... time to get rid of 👻

2019-11-06 11:04:42 +01:00

ascii.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

bool.rs

Snap cfgs to new beta

2019-09-25 08:42:46 -04:00

borrow.rs

be more direct about borrow requirenments

2019-04-03 11:41:24 +03:00

Cargo.toml

Move the matches! macro to the prelude

2019-10-23 15:35:36 +02:00

cell.rs

make things ugly

2019-11-13 09:31:08 +01:00

clone.rs

Snap cfgs to new beta

2019-09-25 08:42:46 -04:00

cmp.rs

Migrate from #[structural_match] attribute a lang-item trait.

2019-10-25 14:52:07 +02:00

convert.rs

Snap cfgs

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default.rs

Snap cfgs to new beta

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ffi.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

hint.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

internal_macros.rs

std: Remove internal definitions of cfg_if! macro

2019-06-10 10:58:44 -07:00

intrinsics.rs

Auto merge of #66156 - Mark-Simulacrum:stage0-step, r=pietroalbini

2019-11-13 00:42:19 +00:00

iter_private.rs

Remove licenses

2018-12-25 21:08:33 -07:00

lib.rs

Snap cfgs

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macros.rs

Snap cfgs

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marker.rs

Snap cfgs

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option.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

panic.rs

Snap cfgs

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panicking.rs

Snap cfgs

2019-11-12 16:36:57 -05:00

pin.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

raw.rs

Fix more tests after revert of rustdoc cfg(test) feature

2019-06-09 18:15:53 +01:00

result.rs

add Result::map_or

2019-11-12 03:22:04 +00:00

time.rs

Have tidy ensure that we document all unsafe blocks in libcore

2019-11-06 11:04:42 +01:00

tuple.rs

libcore => 2018

2019-04-18 14:47:35 +09:00

unit.rs

libcore => 2018

2019-04-18 14:47:35 +09:00