Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/doc/book/redirects/patterns.md b/src/doc/book/redirects/patterns.md
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+% Patterns
+
+<small>There is a new edition of the book and this is an old link.</small>
+
+> Patterns are a special syntax within Rust for matching against the structure of our types, complex or simple.
+> A pattern is made up of some combination of literals; destructured arrays, enums, structs, or tuples; variables, wildcards, and placeholders.
+> These pieces describe the “shape” of the data we’re working with.
+
+```rust
+let x = Some(5);
+let y = 10;
+
+match x {
+    Some(50) => println!("Got 50"),
+    Some(y) => println!("Matched, y = {:?}", y),
+    _ => println!("Default case, x = {:?}", x),
+}
+```
+
+---
+
+You can find the latest version of this information
+[here](ch06-02-match.html).
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