Tyler Mandry 17ec4b8258 Rollup merge of #79809 - Eric-Arellano:split-once, r=matklad ... Dogfood `str_split_once()` Part of https://github.com/rust-lang/rust/issues/74773. Beyond increased clarity, this fixes some instances of a common confusion with how `splitn(2)` behaves: the first element will always be `Some()`, regardless of the delimiter, and even if the value is empty. Given this code: ```rust fn main() { let val = "..."; let mut iter = val.splitn(2, '='); println!("Input: {:?}, first: {:?}, second: {:?}", val, iter.next(), iter.next()); } ``` We get: ``` Input: "no_delimiter", first: Some("no_delimiter"), second: None Input: "k=v", first: Some("k"), second: Some("v") Input: "=", first: Some(""), second: Some("") ``` Using `str_split_once()` makes more clear what happens when the delimiter is not found.		2020-12-10 21:33:08 -08:00
..
backtrace	Add column number support to Backtrace	2020-11-15 13:09:56 +01:00
collections	Rollup merge of #77996 - tkaitchuck:master, r=m-ou-se	2020-11-13 15:26:10 +01:00
env	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
error	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
f32	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
f64	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
ffi	Bump bootstrap compiler version	2020-11-19 19:23:36 -05:00
fs	std: Fix test got_symlink_permission on Windows	2020-11-16 21:09:26 +03:00
io	Auto merge of #77801 - fusion-engineering-forks:pin-mutex, r=Mark-Simulacrum	2020-12-10 23:43:20 +00:00
lazy	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
memchr	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
net	Move const ip in ui test to unit test	2020-11-26 23:15:32 +09:00
num	rustc_expand: Mark inner #![test] attributes as soft-unstable	2020-11-20 19:35:03 +03:00
os	Take sys/vxworks/{fd,fs,io} from sys/unix instead.	2020-10-16 06:19:00 +02:00
panic	review: fix nits and move panic safety tests to the correct place	2020-09-25 23:10:24 +02:00
path	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
prelude	Fix incorrect link in prelude	2020-09-02 17:38:21 -04:00
process	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
sync	Convert a bunch of intra-doc links	2020-11-07 12:50:57 -08:00
sys	Rollup merge of #79375 - vext01:kernel-copy-temps, r=bjorn3	2020-12-10 21:33:02 -08:00
sys_common	Rollup merge of #79809 - Eric-Arellano:split-once, r=matklad	2020-12-10 21:33:08 -08:00
thread	Drop support for cloudabi targets	2020-11-22 17:11:41 -05:00
time	Duration::zero() -> Duration::ZERO	2020-10-21 20:44:03 -07:00
alloc.rs	Rename AllocRef to Allocator and (de)alloc to (de)allocate	2020-12-04 14:47:15 +01:00
ascii.rs	Convert many files to intra-doc links	2020-09-02 17:37:40 -04:00
backtrace.rs	Add column number support to Backtrace	2020-11-15 13:09:56 +01:00
env.rs	Improve docs for std::env::args()	2020-09-04 14:00:09 -07:00
error.rs	Rename LayoutErr to LayoutError outside of core	2020-10-08 00:40:10 -04:00
f32.rs	Rollup merge of #77027 - termhn:mul_add_doc_change, r=m-ou-se	2020-12-10 21:32:59 -08:00
f64.rs	Rollup merge of #77027 - termhn:mul_add_doc_change, r=m-ou-se	2020-12-10 21:32:59 -08:00
fs.rs	Drop support for cloudabi targets	2020-11-22 17:11:41 -05:00
future.rs	Fix stabilization marker for future_readiness_fns	2020-09-15 23:12:08 +02:00
keyword_docs.rs	Rollup merge of #79383 - abdnh:patch-1, r=shepmaster	2020-11-28 15:58:21 +01:00
lazy.rs	Add (internal-only) SyncOnceCell::get_or_init_pin.	2020-12-08 22:57:50 +01:00
lib.rs	Rollup merge of #79809 - Eric-Arellano:split-once, r=matklad	2020-12-10 21:33:08 -08:00
macros.rs	Use ? in core/std macros	2020-10-26 07:15:37 +09:00
memchr.rs	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
num.rs	std: move "mod tests/benches" to separate files	2020-08-31 02:56:59 +00:00
panic.rs	Add tracking issue number for panic_any.	2020-10-28 21:23:45 +01:00
panicking.rs	Merge set_panic and set_print into set_output_capture.	2020-11-10 21:58:13 +01:00
path.rs	Clean up intra-doc links in std::path	2020-10-27 20:54:30 -07:00
primitive_docs.rs	Use more std:: instead of core:: in docs for consistency, add more intra doc links	2020-12-02 00:41:53 +01:00
process.rs	Auto merge of #78439 - lzutao:rm-clouldabi, r=Mark-Simulacrum	2020-11-23 19:01:19 +00:00
rt.rs	Prevent __rust_begin_short_backtrace frames from being tail-call optimised away	2020-08-07 19:31:25 +01:00
time.rs	Drop support for cloudabi targets	2020-11-22 17:11:41 -05:00