Revert "oldmap: use &K instead of K in find and get"

This reverts commit 8e643525d4.

src/test/auxiliary/issue-2631-a.rs

@@ -20,5 +20,5 @@ pub type header_map = HashMap<~str, @DVec<@~str>>;
 
 // the unused ty param is necessary so this gets monomorphized
 pub fn request<T: Copy>(req: header_map) {
-  let _x = copy *(copy *req.get(&~"METHOD"))[0u];
+  let _x = copy *(copy *req.get(~"METHOD"))[0u];
 }

src/test/bench/core-map.rs

@@ -42,7 +42,7 @@ fn old_int_benchmarks(rng: @rand::Rng, num_keys: uint, results: &mut Results) {
             }
 
             for uint::range(0, num_keys) |i| {
-                assert map.get(&i) == i+1;
+                assert map.get(i) == i+1;
             }
         }
     }
@@ -81,7 +81,7 @@ fn old_str_benchmarks(rng: @rand::Rng, num_keys: uint, results: &mut Results) {
 
             for uint::range(0, num_keys) |i| {
                 let s = uint::to_str(i);
-                assert map.get(&s) == i;
+                assert map.get(s) == i;
             }
         }
     }

src/test/bench/core-std.rs

@@ -83,7 +83,7 @@ fn str_set() {
 
     let mut found = 0;
     for int::range(0, 1000) |_i| {
-        match s.find(&r.gen_str(10)) {
+        match s.find(r.gen_str(10)) {
           Some(_) => { found += 1; }
           None => { }
         }

src/test/bench/shootout-k-nucleotide-pipes.rs

@@ -69,7 +69,7 @@ fn sort_and_fmt(mm: HashMap<~[u8], uint>, total: uint) -> ~str {
 
 // given a map, search for the frequency of a pattern
 fn find(mm: HashMap<~[u8], uint>, key: ~str) -> uint {
-   match mm.find(&str::to_bytes(str::to_lower(key))) {
+   match mm.find(str::to_bytes(str::to_lower(key))) {
       option::None      => { return 0u; }
       option::Some(num) => { return num; }
    }

src/test/bench/shootout-mandelbrot.rs

@@ -136,7 +136,7 @@ fn writer(path: ~str, pport: pipes::Port<Line>, size: uint)
             while prev <= i {
                 if lines.contains_key_ref(&prev) {
                     debug!("WS %u", prev);
-                    cout.write(lines.get(&prev));
+                    cout.write(lines.get(prev));
                     done += 1_u;
                     lines.remove(&prev);
                     prev += 1_u;

src/test/run-pass/hashmap-memory.rs

@@ -49,7 +49,7 @@ mod map_reduce {
         fn emit(im: oldmap::HashMap<~str, int>, ctrl: SharedChan<ctrl_proto>, key: ~str,
                 val: ~str) {
             let mut c;
-            match im.find(&key) {
+            match im.find(copy key) {
               Some(_c) => { c = _c }
               None => {
                   let (pp, cc) = stream();
@@ -88,7 +88,7 @@ mod map_reduce {
               mapper_done => { num_mappers -= 1; }
               find_reducer(k, cc) => {
                 let mut c;
-                match reducers.find(&str::from_bytes(k)) {
+                match reducers.find(str::from_bytes(k)) {
                   Some(_c) => { c = _c; }
                   None => { c = 0; }
                 }