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auto merge of #7147 : huonw/rust/vec-connect, r=Aatch

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This is caused by StrVector having a generic implementation for &[S]
and so #5898 means that method resolution of ~[~[1]].concat() sees that
both StrVector and VectorVector have methods that (superficially) match.

They are now connect_vec and concat_vec, which means that they can actually be
called.
This commit is contained in:
bors 2013-06-15 06:54:59 -07:00
commit 82f2e4dc9f
1 changed files with 18 additions and 16 deletions
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34
src/libstd/vec.rs
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@ -1002,31 +1002,33 @@ pub fn retain<T>(v: &mut ~[T], f: &fn(t: &T) -> bool) {
}
/// Flattens a vector of vectors of T into a single vector of T.
pub fn concat<T:Copy>(v: &[~[T]]) -> ~[T] { v.concat() }
pub fn concat<T:Copy>(v: &[~[T]]) -> ~[T] { v.concat_vec() }
/// Concatenate a vector of vectors, placing a given separator between each
pub fn connect<T:Copy>(v: &[~[T]], sep: &T) -> ~[T] { v.connect(sep) }
pub fn connect<T:Copy>(v: &[~[T]], sep: &T) -> ~[T] { v.connect_vec(sep) }
/// Flattens a vector of vectors of T into a single vector of T.
pub fn concat_slices<T:Copy>(v: &[&[T]]) -> ~[T] { v.concat() }
pub fn concat_slices<T:Copy>(v: &[&[T]]) -> ~[T] { v.concat_vec() }
/// Concatenate a vector of vectors, placing a given separator between each
pub fn connect_slices<T:Copy>(v: &[&[T]], sep: &T) -> ~[T] { v.connect(sep) }
pub fn connect_slices<T:Copy>(v: &[&[T]], sep: &T) -> ~[T] { v.connect_vec(sep) }
#[allow(missing_doc)]
pub trait VectorVector<T> {
pub fn concat(&self) -> ~[T];
pub fn connect(&self, sep: &T) -> ~[T];
// FIXME #5898: calling these .concat and .connect conflicts with
// StrVector::con{cat,nect}, since they have generic contents.
pub fn concat_vec(&self) -> ~[T];
pub fn connect_vec(&self, sep: &T) -> ~[T];
}
impl<'self, T:Copy> VectorVector<T> for &'self [~[T]] {
/// Flattens a vector of slices of T into a single vector of T.
pub fn concat(&self) -> ~[T] {
pub fn concat_vec(&self) -> ~[T] {
self.flat_map(|&inner| inner)
}
/// Concatenate a vector of vectors, placing a given separator between each.
pub fn connect(&self, sep: &T) -> ~[T] {
pub fn connect_vec(&self, sep: &T) -> ~[T] {
let mut r = ~[];
let mut first = true;
for self.each |&inner| {
@ -1039,12 +1041,12 @@ impl<'self, T:Copy> VectorVector<T> for &'self [~[T]] {
impl<'self, T:Copy> VectorVector<T> for &'self [&'self [T]] {
/// Flattens a vector of slices of T into a single vector of T.
pub fn concat(&self) -> ~[T] {
pub fn concat_vec(&self) -> ~[T] {
self.flat_map(|&inner| inner.to_owned())
}
/// Concatenate a vector of slices, placing a given separator between each.
pub fn connect(&self, sep: &T) -> ~[T] {
pub fn connect_vec(&self, sep: &T) -> ~[T] {
let mut r = ~[];
let mut first = true;
for self.each |&inner| {
@ -3639,10 +3641,10 @@ mod tests {
#[test]
fn test_concat() {
assert_eq!(concat([~[1], ~[2,3]]), ~[1, 2, 3]);
assert_eq!([~[1], ~[2,3]].concat(), ~[1, 2, 3]);
assert_eq!([~[1], ~[2,3]].concat_vec(), ~[1, 2, 3]);
assert_eq!(concat_slices([&[1], &[2,3]]), ~[1, 2, 3]);
assert_eq!([&[1], &[2,3]].concat(), ~[1, 2, 3]);
assert_eq!([&[1], &[2,3]].concat_vec(), ~[1, 2, 3]);
}
#[test]
@ -3650,14 +3652,14 @@ mod tests {
assert_eq!(connect([], &0), ~[]);
assert_eq!(connect([~[1], ~[2, 3]], &0), ~[1, 0, 2, 3]);
assert_eq!(connect([~[1], ~[2], ~[3]], &0), ~[1, 0, 2, 0, 3]);
assert_eq!([~[1], ~[2, 3]].connect(&0), ~[1, 0, 2, 3]);
assert_eq!([~[1], ~[2], ~[3]].connect(&0), ~[1, 0, 2, 0, 3]);
assert_eq!([~[1], ~[2, 3]].connect_vec(&0), ~[1, 0, 2, 3]);
assert_eq!([~[1], ~[2], ~[3]].connect_vec(&0), ~[1, 0, 2, 0, 3]);
assert_eq!(connect_slices([], &0), ~[]);
assert_eq!(connect_slices([&[1], &[2, 3]], &0), ~[1, 0, 2, 3]);
assert_eq!(connect_slices([&[1], &[2], &[3]], &0), ~[1, 0, 2, 0, 3]);
assert_eq!([&[1], &[2, 3]].connect(&0), ~[1, 0, 2, 3]);
assert_eq!([&[1], &[2], &[3]].connect(&0), ~[1, 0, 2, 0, 3]);
assert_eq!([&[1], &[2, 3]].connect_vec(&0), ~[1, 0, 2, 3]);
assert_eq!([&[1], &[2], &[3]].connect_vec(&0), ~[1, 0, 2, 0, 3]);
}
#[test]