From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- third_party/rust/scopeguard/examples/readme.rs | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 third_party/rust/scopeguard/examples/readme.rs (limited to 'third_party/rust/scopeguard/examples') diff --git a/third_party/rust/scopeguard/examples/readme.rs b/third_party/rust/scopeguard/examples/readme.rs new file mode 100644 index 0000000000..0710f9f5a1 --- /dev/null +++ b/third_party/rust/scopeguard/examples/readme.rs @@ -0,0 +1,27 @@ + +#[macro_use(defer)] extern crate scopeguard; + +use scopeguard::guard; + +fn f() { + defer!(println!("Called at return or panic")); + panic!(); +} + +use std::fs::File; +use std::io::Write; + +fn g() { + let f = File::create("newfile.txt").unwrap(); + let mut file = guard(f, |f| { + // write file at return or panic + let _ = f.sync_all(); + }); + // Access the file through the scope guard itself + file.write_all(b"test me\n").unwrap(); +} + +fn main() { + f(); + g(); +} -- cgit v1.2.3