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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs')
-rw-r--r-- | src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs b/src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs new file mode 100644 index 000000000..2884a2734 --- /dev/null +++ b/src/test/ui/half-open-range-patterns/slice_pattern_syntax_problem0.rs @@ -0,0 +1,16 @@ +#![feature(half_open_range_patterns)] +#![feature(exclusive_range_pattern)] + +fn main() { + let xs = [13, 1, 5, 2, 3, 1, 21, 8]; + let [a, b, c, rest @ ..] = xs; + // Consider the following example: + assert!(a == 13 && b == 1 && c == 5 && rest.len() == 5); + + // What if we wanted to pull this apart without individually binding a, b, and c? + let [first_three @ ..3, rest @ 2..] = xs; + //~^ pattern requires 2 elements but array has 8 + // This is somewhat unintuitive and makes slice patterns exceedingly verbose. + // We want to stabilize half-open RangeFrom (`X..`) patterns + // but without banning us from using them for a more efficient slice pattern syntax. +} |