데블스캠프2018/RS - Revision history

165.194.35.9 at 17:02, 28 June 2018

2018-06-28T17:02:00Z

← Older revision		Revision as of 17:02, 28 June 2018
Line 53:		Line 53:
	}		}
	```		```

			```
			fn main() {
			println!("Factorial: {}", factorial(5));
			}
			fn factorial(i: u64) -> u64 {
			let mut acc = 1;
			for num in 2..i+1 {
			acc *= num;
			}
			acc
			}
			```
			= Rust =
			* statement & expression
			** statement : no return value
			** let statement
			** expression : evaluate to a resulting value
			** operation
			** calling a function
			** calling a macro
			** block
			== ownership(소유권) ==
			* enables memory safety guarantees without a garbage collector.
			=== Ownership Rules ===
			* Each value in Rust has a variable that's called its owner.
			* There can only be one owner at a time.
			* When the owner goes out of scope, the value will be dropped. -> lifetime
			* At any given time, you can have either one mutable reference or any number of immutable references.
			* References must always be valid.

165.194.35.9 at 16:34, 28 June 2018

2018-06-28T16:34:49Z

@@ Line 35: / Line 35: @@
 ** nightly
-== playground==
+== playground ==
 * https://play.rust-lang.org
 * https://repl.it

165.194.35.9: {CREATE}

2018-06-28T16:32:57Z

{CREATE}

New page

= .rs =
== feature ==
* zero-cost abstractions
* move semantics
* guaranteed memory safety
* threads without data races
* trait-based generics
* pattern matching

== Fast ==
* LLVM
* Compile to binary
* no GC
* minimal runtime

== Prevent segfaults ==
* No dangling pointer
* No null pointer
* No segfault

== thread safety ==
* No data race
** Ownership guarantee

* hard to compile

== Cargo ==
* The Rust package manager
** downloads dependencies

== Rustup ==
* Rust toolchain installer
** stable
** beta
** nightly

== playground==
* https://play.rust-lang.org
* https://repl.it