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change to use && mode (can't move from upvar)

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relevant to #1965
This commit is contained in:
Niko Matsakis 2012-04-12 21:58:32 -07:00
parent 39c5e06526
commit c2fe288900
1 changed files with 5 additions and 5 deletions
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10
src/libcore/iter.rs
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@ -81,20 +81,20 @@ fn flat_map<A,B,IA:iterable<A>,IB:iterable<B>>(
} }
} }
fn foldl<A,B,IA:iterable<A>>(self: IA, +b0: B, blk: fn(-B, A) -> B) -> B { fn foldl<A,B,IA:iterable<A>>(self: IA, +b0: B, blk: fn(B, A) -> B) -> B {
let mut b <- b0; let mut b <- b0;
self.iter {|a| self.iter {|a|
b = blk(b, a); b <- blk(b, a);
} }
ret b; ret b;
} }
fn foldr<A:copy,B,IA:iterable<A>>( fn foldr<A:copy,B,IA:iterable<A>>(
self: IA, +b0: B, blk: fn(A, -B) -> B) -> B { self: IA, +b0: B, blk: fn(A, B) -> B) -> B {
let mut b <- b0; let mut b <- b0;
reversed(self) {|a| reversed(self) {|a|
b = blk(a, b); b <- blk(a, b);
} }
ret b; ret b;
} }
@ -291,7 +291,7 @@ fn test_count() {
#[test] #[test]
fn test_foldr() { fn test_foldr() {
fn sub(&&a: int, -b: int) -> int { fn sub(&&a: int, &&b: int) -> int {
a - b a - b
} }
let sum = foldr([1, 2, 3, 4], 0, sub); let sum = foldr([1, 2, 3, 4], 0, sub);