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August 29, 2015 14:07
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/ 所有権帰ってくる | |
fn borrower_a(x: &int) -> int { *x } | |
// 所有権帰ってくる | |
fn borrower_b(x: &int) { | |
let a = x; | |
println!("{}", a); | |
} | |
// 所有権帰ってくる | |
fn borrower_c(v: &Vec<int>) { | |
for x in v.iter() { | |
println!("{}", x); | |
} | |
} | |
// 所有権帰ってくる | |
fn borrower_d(x: int) -> int { | |
// *x // type `int` cannot be dereferenced | |
x | |
} | |
// 所有権帰ってこない | |
//fn consumer_a(v: Vec<int>) { | |
// for x in v.iter() { | |
// println!("{}", x); | |
// } | |
//} | |
// 所有権帰ってこない | |
//fn consumer_b(v: Vec<int>) { | |
// for x in v.into_iter() { | |
// println!("{}", x); | |
// } | |
//} | |
fn main() { | |
// どうやったら所有権帰ってこないようになる? | |
let a = 1i; | |
borrower_a(&a); | |
borrower_b(&a); | |
borrower_d(a); | |
println!("{}", a); | |
let v = vec!(1i, 2, 3); | |
borrower_c(&v); | |
// consumer_a(v); | |
// consumer_b(v); | |
for x in v.iter() { | |
println!("{}", x); | |
} | |
} |
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