add IteratorUtil to the prelude

doc/tutorial-tasks.md

@@ -351,7 +351,6 @@ a single large vector of floats. Each task needs the full vector to perform its
 # use std::vec;
 # use std::uint;
 # use std::rand;
-# use std::iterator::IteratorUtil;
 use extra::arc::ARC;
 
 fn pnorm(nums: &~[float], p: uint) -> float {

src/compiletest/header.rs

@@ -13,7 +13,6 @@ use core::prelude::*;
 use common::config;
 use common;
 
-use core::iterator::IteratorUtil;
 use core::io;
 use core::os;
 

src/compiletest/procsrv.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use core::os;
 use core::run;

src/compiletest/runtest.rs

@@ -22,7 +22,6 @@ use procsrv;
 use util;
 use util::logv;
 
-use core::iterator::IteratorUtil;
 use core::io;
 use core::os;
 use core::str;

src/libextra/dlist.rs

@@ -20,7 +20,6 @@ Do not use ==, !=, <, etc on doubly-linked lists -- it may not terminate.
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::managed;
 use core::old_iter;
 use core::vec;

src/libextra/fileinput.rs

@@ -414,7 +414,6 @@ mod test {
 
     use super::{FileInput, pathify, input_vec, input_vec_state};
 
-    use core::iterator::IteratorUtil;
     use core::io;
     use core::uint;
     use core::vec;

src/libextra/getopts.rs

@@ -83,7 +83,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::cmp::Eq;
 use core::result::{Err, Ok};
 use core::result;

src/libextra/json.rs

@@ -18,7 +18,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::char;
 use core::float;
 use core::hashmap::HashMap;

src/libextra/list.rs

@@ -12,7 +12,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 
 #[deriving(Eq)]
 pub enum List<T> {

src/libextra/net_ip.rs

@@ -14,7 +14,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::libc;
 use core::comm::{stream, SharedChan};
 use core::ptr;

src/libextra/net_url.rs

@@ -14,7 +14,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::cmp::Eq;
 use core::io::{Reader, ReaderUtil};
 use core::io;

src/libextra/num/bigint.rs

@@ -19,7 +19,6 @@ A BigInt is a combination of BigUint and Sign.
 #[allow(missing_doc)];
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 use core::cmp::{Eq, Ord, TotalEq, TotalOrd, Ordering, Less, Equal, Greater};
 use core::int;
 use core::num::{IntConvertible, Zero, One, ToStrRadix, FromStrRadix, Orderable};

src/libextra/num/rational.rs

@@ -12,7 +12,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::cmp;
 use core::from_str::FromStr;
 use core::num::{Zero,One,ToStrRadix,FromStrRadix,Round};

src/libextra/par.rs

@@ -10,7 +10,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::cast;
 use core::ptr;
 use core::sys;

src/libextra/rope.rs

@@ -37,7 +37,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::uint;
 use core::vec;
 use core::str;

src/libextra/semver.rs

@@ -14,7 +14,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::char;
 use core::cmp;
 use core::io::{ReaderUtil};

src/libextra/sha1.rs

@@ -24,7 +24,7 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
+use core::str;
 use core::uint;
 use core::vec;
 

src/libextra/stats.rs

@@ -12,7 +12,7 @@
 
 use core::prelude::*;
 
-use core::iterator::*;
+use core::vec;
 use core::f64;
 use core::cmp;
 use core::num;

src/libextra/terminfo/parser/compiled.rs

@@ -14,7 +14,6 @@ use core::prelude::*;
 
 use core::{vec, int, str};
 use core::io::Reader;
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use super::super::TermInfo;
 

src/libextra/terminfo/searcher.rs

@@ -15,7 +15,6 @@ use core::prelude::*;
 use core::{os, str};
 use core::os::getenv;
 use core::io::{file_reader, Reader};
-use core::iterator::IteratorUtil;
 use path = core::path::Path;
 
 /// Return path to database entry for `term`

src/libextra/time.rs

@@ -16,7 +16,6 @@ use core::i32;
 use core::int;
 use core::io;
 use core::str;
-use core::iterator::IteratorUtil;
 
 static NSEC_PER_SEC: i32 = 1_000_000_000_i32;
 

src/libextra/treemap.rs

@@ -14,7 +14,6 @@
 
 use core::prelude::*;
 
-use core::iterator::*;
 use core::uint;
 use core::util::{swap, replace};
 
@@ -709,7 +708,6 @@ mod test_treemap {
 
     use super::*;
 
-    use core::iterator::*;
     use core::rand::RngUtil;
     use core::rand;
     use core::str;
@@ -1030,7 +1028,6 @@ mod test_treemap {
 #[cfg(test)]
 mod test_set {
     use core::prelude::*;
-    use core::iterator::*;
 
     use super::*;
 

src/librust/rust.rc

@@ -30,7 +30,6 @@ extern mod rusti;
 extern mod rustc;
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use core::io;
 use core::os;

src/librustc/back/link.rs

@@ -22,7 +22,6 @@ use middle::trans::common::CrateContext;
 use middle::ty;
 use util::ppaux;
 
-use core::iterator::IteratorUtil;
 use core::char;
 use core::hash::Streaming;
 use core::hash;

src/librustc/driver/driver.rs

@@ -24,7 +24,6 @@ use middle;
 use util::common::time;
 use util::ppaux;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::int;
 use core::io;

src/librustc/metadata/cstore.rs

@@ -17,7 +17,6 @@ use core::prelude::*;
 use metadata::cstore;
 use metadata::decoder;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::vec;
 use extra;

src/librustc/metadata/encoder.rs

@@ -22,7 +22,6 @@ use middle::ty;
 use middle;
 use util::ppaux::ty_to_str;
 
-use core::iterator::IteratorUtil;
 use core::hash::HashUtil;
 use core::hashmap::HashMap;
 use core::int;

src/librustc/middle/astencode.rs

@@ -25,7 +25,6 @@ use middle::{ty, typeck, moves};
 use middle;
 use util::ppaux::ty_to_str;
 
-use core::iterator::IteratorUtil;
 use core::at_vec;
 use core::uint;
 use extra::ebml::reader;

src/librustc/middle/borrowck/check_loans.rs

@@ -18,7 +18,6 @@
 // 4. moves do not affect things loaned out in any way
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use core::hashmap::HashSet;
 use core::uint;

src/librustc/middle/borrowck/gather_loans/mod.rs

@@ -17,7 +17,6 @@
 // sure that all of these loans are honored.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::borrowck::*;
 use middle::borrowck::move_data::MoveData;

src/librustc/middle/borrowck/move_data.rs

@@ -16,7 +16,6 @@ comments in the section "Moves and initialization" and in `doc.rs`.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use core::hashmap::{HashMap, HashSet};
 use core::uint;

src/librustc/middle/check_const.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use core::iterator::IteratorUtil;
 use core::prelude::*;
 
 use driver::session::Session;

src/librustc/middle/check_match.rs

@@ -19,7 +19,6 @@ use middle::typeck::method_map;
 use middle::moves;
 use util::ppaux::ty_to_str;
 
-use core::iterator::IteratorUtil;
 use core::uint;
 use core::vec;
 use extra::sort;

src/librustc/middle/const_eval.rs

@@ -18,7 +18,6 @@ use middle;
 use syntax::{ast, ast_map, ast_util, visit};
 use syntax::ast::*;
 
-use core::iterator::IteratorUtil;
 use core::float;
 use core::hashmap::{HashMap, HashSet};
 use core::vec;

src/librustc/middle/dataflow.rs

@@ -18,7 +18,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::cast;
 use core::io;
 use core::uint;

src/librustc/middle/kind.rs

@@ -17,7 +17,6 @@ use middle::typeck;
 use util::ppaux::{Repr, ty_to_str};
 use util::ppaux::UserString;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 use syntax::ast::*;
 use syntax::attr::attrs_contains_name;

src/librustc/middle/lint.rs

@@ -15,7 +15,6 @@ use middle::ty;
 use middle::pat_util;
 use util::ppaux::{ty_to_str};
 
-use core::iterator::IteratorUtil;
 use core::char;
 use core::cmp;
 use core::hashmap::HashMap;

src/librustc/middle/liveness.rs

@@ -110,7 +110,6 @@ use middle::ty;
 use middle::typeck;
 use middle::moves;
 
-use core::iterator::IteratorUtil;
 use core::cast::transmute;
 use core::hashmap::HashMap;
 use core::io;

src/librustc/middle/mem_categorization.rs

@@ -47,7 +47,6 @@
  */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::ty;
 use middle::typeck;

src/librustc/middle/moves.rs

@@ -127,7 +127,6 @@ and so on.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::pat_util::{pat_bindings};
 use middle::freevars;

src/librustc/middle/region.rs

@@ -26,7 +26,6 @@ use middle::ty::{region_variance, rv_covariant, rv_invariant};
 use middle::ty::{rv_contravariant, FreeRegion};
 use middle::ty;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::{HashMap, HashSet};
 use syntax::ast_map;
 use syntax::codemap::span;

src/librustc/middle/resolve.rs

@@ -40,7 +40,6 @@ use syntax::visit::{visit_foreign_item, visit_item};
 use syntax::visit::{visit_mod, visit_ty, vt};
 use syntax::opt_vec::OptVec;
 
-use core::iterator::IteratorUtil;
 use core::str;
 use core::uint;
 use core::vec;

src/librustc/middle/trans/_match.rs

@@ -172,7 +172,6 @@ use middle::trans::type_of;
 use middle::ty;
 use util::common::indenter;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::vec;
 use syntax::ast;

src/librustc/middle/trans/adt.rs

@@ -44,7 +44,6 @@
  *   taken to it, implementing them for Rust seems difficult.
  */
 
-use core::iterator::IteratorUtil;
 use core::container::Map;
 use core::libc::c_ulonglong;
 use core::option::{Option, Some, None};

src/librustc/middle/trans/base.rs

@@ -64,7 +64,6 @@ use middle::ty;
 use util::common::indenter;
 use util::ppaux::{Repr, ty_to_str};
 
-use core::iterator::IteratorUtil;
 use core::hash;
 use core::hashmap::{HashMap, HashSet};
 use core::int;

src/librustc/middle/trans/cabi_arm.rs

@@ -17,7 +17,6 @@ use middle::trans::cabi::{ABIInfo, FnType, LLVMType};
 use middle::trans::common::{T_i8, T_i16, T_i32, T_i64};
 use middle::trans::common::{T_array, T_ptr, T_void};
 
-use core::iterator::IteratorUtil;
 use core::option::{Option, None, Some};
 use core::uint;
 

src/librustc/middle/trans/cabi_mips.rs

@@ -10,7 +10,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::libc::c_uint;
 use core::ptr;
 use core::uint;

src/librustc/middle/trans/cabi_x86_64.rs

@@ -19,7 +19,6 @@ use lib::llvm::True;
 use middle::trans::common::*;
 use middle::trans::cabi::*;
 
-use core::iterator::IteratorUtil;
 use core::libc::c_uint;
 use core::option;
 use core::option::Option;

src/librustc/middle/trans/callee.rs

@@ -17,7 +17,6 @@
 // closure.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use back::abi;
 use driver::session;

src/librustc/middle/trans/closure.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use back::abi;
 use back::link::{mangle_internal_name_by_path_and_seq};

src/librustc/middle/trans/common.rs

@@ -11,7 +11,6 @@
 //! Code that is useful in various trans modules.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use back::{abi, upcall};
 use driver::session;

src/librustc/middle/trans/expr.rs

@@ -152,7 +152,6 @@ use middle::ty;
 use util::common::indenter;
 use util::ppaux::Repr;
 
-use core::iterator::IteratorUtil;
 use core::cast::transmute;
 use core::hashmap::HashMap;
 use core::vec;

src/librustc/middle/trans/inline.rs

@@ -19,7 +19,6 @@ use middle::trans::common::*;
 use middle::ty;
 use util::ppaux::ty_to_str;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 use syntax::ast;
 use syntax::ast_map::path_name;

src/librustc/middle/trans/monomorphize.rs

@@ -32,7 +32,6 @@ use middle::ty::{FnSig};
 use middle::typeck;
 use util::ppaux::{Repr,ty_to_str};
 
-use core::iterator::IteratorUtil;
 use core::vec;
 use syntax::ast;
 use syntax::ast_map;

src/librustc/middle/trans/reachable.rs

@@ -16,7 +16,6 @@
 // reachable as well.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::resolve;
 use middle::ty;

src/librustc/middle/trans/type_use.rs

@@ -33,7 +33,6 @@ use middle::trans::inline;
 use middle::ty;
 use middle::typeck;
 
-use core::iterator::IteratorUtil;
 use core::option::{Some, None};
 use core::uint;
 use core::vec;

src/librustc/middle/ty.rs

@@ -27,7 +27,6 @@ use util::ppaux::{Repr, UserString};
 use util::common::{indenter};
 use util::enum_set::{EnumSet, CLike};
 
-use core::iterator::IteratorUtil;
 use core::cast;
 use core::cmp;
 use core::hashmap::{HashMap, HashSet};

src/librustc/middle/typeck/check/_match.rs

@@ -18,7 +18,6 @@ use middle::typeck::check::{instantiate_path, lookup_def};
 use middle::typeck::check::{structure_of, valid_range_bounds};
 use middle::typeck::require_same_types;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::{HashMap, HashSet};
 use syntax::ast;
 use syntax::ast_util;

src/librustc/middle/typeck/check/mod.rs

@@ -111,7 +111,6 @@ use util::ppaux::{bound_region_to_str};
 use util::ppaux;
 
 
-use core::iterator::IteratorUtil;
 use core::cast::transmute;
 use core::hashmap::HashMap;
 use core::result;

src/librustc/middle/typeck/check/regionck.rs

@@ -28,7 +28,6 @@ this point a bit better.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::freevars::get_freevars;
 use middle::ty::{re_scope};

src/librustc/middle/typeck/check/vtable.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::resolve::Impl;
 use middle::ty::param_ty;

src/librustc/middle/typeck/check/writeback.rs

@@ -13,7 +13,6 @@
 // substitutions.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use middle::pat_util;
 use middle::ty;

src/librustc/middle/typeck/coherence.rs

@@ -54,7 +54,6 @@ use syntax::visit::{Visitor, SimpleVisitor};
 use syntax::visit::{visit_mod};
 use util::ppaux::ty_to_str;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::{HashMap, HashSet};
 use core::result::Ok;
 use core::uint;

src/librustc/middle/typeck/collect.rs

@@ -31,7 +31,6 @@ are represented as `ty_param()` instances.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use metadata::csearch;
 use middle::ty::{substs, ty_param_bounds_and_ty};

src/librustc/middle/typeck/infer/mod.rs

@@ -269,7 +269,6 @@ use util::ppaux::{bound_region_to_str, ty_to_str, trait_ref_to_str};
 
 use core::result;
 use core::vec;
-use core::iterator::IteratorUtil;
 use extra::list::Nil;
 use extra::smallintmap::SmallIntMap;
 use syntax::ast::{m_imm, m_mutbl};

src/librustc/util/ppaux.rs

@@ -32,7 +32,6 @@ use syntax::parse::token;
 use syntax::print::pprust;
 use syntax::{ast, ast_util};
 
-use core::iterator::IteratorUtil;
 use core::str;
 use core::vec;
 

src/librustdoc/desc_to_brief_pass.rs

@@ -24,7 +24,6 @@ use fold::Fold;
 use fold;
 use pass::Pass;
 
-use core::iterator::IteratorUtil;
 use core::str;
 use core::util;
 

src/librustdoc/doc.rs

@@ -14,7 +14,6 @@ use core::prelude::*;
 
 use doc;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 
 pub type AstId = int;

src/librustdoc/pass.rs

@@ -10,7 +10,6 @@
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 
 use astsrv;
 use doc;

src/librustdoc/unindent_pass.rs

@@ -21,7 +21,6 @@ middle of a line, and each of the following lines is indented.
 
 use core::prelude::*;
 
-use core::iterator::IteratorUtil;
 use core::str;
 use core::uint;
 use pass::Pass;

src/librusti/rusti.rc

@@ -420,9 +420,6 @@ pub fn run_line(repl: &mut Repl, in: @io::Reader, out: @io::Writer, line: ~str,
                 use_rl: bool)
     -> Option<Repl> {
     if line.starts_with(":") {
-        // FIXME #5898: conflicts with Cell.take(), so can't be at the top level
-        use std::iterator::IteratorUtil;
-
         // drop the : and the \n (one byte each)
         let full = line.slice(1, line.len() - 1);
         let split: ~[~str] = full.word_iter().transform(|s| s.to_owned()).collect();

src/librustpkg/path_util.rs

@@ -17,7 +17,6 @@ pub use target::{OutputType, Main, Lib, Test, Bench, Target, Build, Install};
 use core::libc::consts::os::posix88::{S_IRUSR, S_IWUSR, S_IXUSR};
 use core::os::mkdir_recursive;
 use core::os;
-use core::iterator::IteratorUtil;
 
 /// Returns the value of RUST_PATH, as a list
 /// of Paths. In general this should be read from the

src/librustpkg/rustpkg.rc

@@ -29,7 +29,6 @@ extern mod syntax;
 
 use core::prelude::*;
 use core::*;
-use core::iterator::IteratorUtil;
 pub use core::path::Path;
 use core::hashmap::HashMap;
 use rustc::driver::{driver, session};

src/librustpkg/version.rs

@@ -15,7 +15,6 @@ extern mod std;
 
 use extra::semver;
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 use core::{char, os, result, run, str};
 use package_path::RemotePath;
 use extra::tempfile::mkdtemp;

src/libstd/iter.rs

@@ -24,8 +24,6 @@ An external iterator object implementing the interface in the `iterator` module
 internal iterator by calling the `advance` method. For example:
 
 ~~~ {.rust}
-use core::iterator::*;
-
 let xs = [0u, 1, 2, 3, 4, 5];
 let ys = [30, 40, 50, 60];
 let mut it = xs.iter().chain(ys.iter());

src/libstd/iterator.rs

@@ -45,8 +45,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [0];
     /// let b = [1];
     /// let mut it = a.iter().chain_(b.iter());
@@ -64,8 +62,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [0];
     /// let b = [1];
     /// let mut it = a.iter().zip(b.iter());
@@ -82,8 +78,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2];
     /// let mut it = a.iter().transform(|&x| 2 * x);
     /// assert_eq!(it.next().get(), 2);
@@ -99,8 +93,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2];
     /// let mut it = a.iter().filter(|&x| *x > 1);
     /// assert_eq!(it.next().get(), &2);
@@ -115,8 +107,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2];
     /// let mut it = a.iter().filter_map(|&x| if x > 1 {Some(2 * x)} else {None});
     /// assert_eq!(it.next().get(), 4);
@@ -130,8 +120,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [100, 200];
     /// let mut it = a.iter().enumerate();
     /// assert_eq!(it.next().get(), (0, &100));
@@ -147,8 +135,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 2, 1];
     /// let mut it = a.iter().skip_while(|&a| *a < 3);
     /// assert_eq!(it.next().get(), &3);
@@ -165,8 +151,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 2, 1];
     /// let mut it = a.iter().take_while(|&a| *a < 3);
     /// assert_eq!(it.next().get(), &1);
@@ -181,8 +165,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter().skip(3);
     /// assert_eq!(it.next().get(), &4);
@@ -198,8 +180,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter().take_(3);
     /// assert_eq!(it.next().get(), &1);
@@ -217,8 +197,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter().scan(1, |fac, &x| {
     ///   *fac = *fac * x;
@@ -239,6 +217,8 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
+    /// use std::iterator::Counter;
+    ///
     /// for Counter::new(0, 10).advance |i| {
     ///     io::println(fmt!("%d", i));
     /// }
@@ -251,8 +231,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let b: ~[int] = a.iter().transform(|&x| x).collect();
     /// assert!(a == b);
@@ -265,8 +243,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter();
     /// assert!(it.nth(2).get() == &3);
@@ -280,8 +256,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// assert!(a.iter().last().get() == &5);
     /// ~~~
@@ -294,8 +268,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// assert!(a.iter().fold(0, |a, &b| a + b) == 15);
     /// ~~~
@@ -306,8 +278,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter();
     /// assert!(it.count() == 5);
@@ -320,8 +290,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// assert!(a.iter().all(|&x| *x > 0));
     /// assert!(!a.iter().all(|&x| *x > 2));
@@ -334,8 +302,6 @@ pub trait IteratorUtil<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter();
     /// assert!(it.any_(|&x| *x == 3));
@@ -482,8 +448,6 @@ pub trait AdditiveIterator<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// let mut it = a.iter().transform(|&x| x);
     /// assert!(it.sum() == 15);
@@ -504,7 +468,7 @@ pub trait MultiplicativeIterator<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
+    /// use std::iterator::Counter;
     ///
     /// fn factorial(n: uint) -> uint {
     ///     Counter::new(1u, 1).take_while(|&i| i <= n).product()
@@ -529,8 +493,6 @@ pub trait OrdIterator<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// assert!(a.iter().max().get() == &5);
     /// ~~~
@@ -541,8 +503,6 @@ pub trait OrdIterator<A> {
     /// # Example
     ///
     /// ~~~ {.rust}
-    /// use std::iterator::*;
-    ///
     /// let a = [1, 2, 3, 4, 5];
     /// assert!(a.iter().min().get() == &1);
     /// ~~~

src/libstd/prelude.rs

@@ -50,8 +50,7 @@ pub use old_iter::{BaseIter, ReverseIter, MutableIter, ExtendedIter, EqIter};
 pub use old_iter::{CopyableIter, CopyableOrderedIter, CopyableNonstrictIter};
 pub use old_iter::{ExtendedMutableIter};
 pub use iter::{Times, FromIter};
-// FIXME: #5898 pub use iterator::{Iterator, IteratorUtil};
-pub use iterator::Iterator;
+pub use iterator::{Iterator, IteratorUtil};
 pub use num::{Num, NumCast};
 pub use num::{Orderable, Signed, Unsigned, Round};
 pub use num::{Algebraic, Trigonometric, Exponential, Hyperbolic};

src/libsyntax/ast_map.rs

@@ -22,7 +22,6 @@ use print::pprust;
 use visit;
 use syntax::parse::token::special_idents;
 
-use core::iterator::IteratorUtil;
 use core::cmp;
 use core::hashmap::HashMap;
 use core::vec;

src/libsyntax/ast_util.rs

@@ -24,7 +24,6 @@ use core::hashmap::HashMap;
 use core::int;
 use core::option;
 use core::to_bytes;
-use core::iterator::IteratorUtil;
 
 pub fn path_name_i(idents: &[ident]) -> ~str {
     // FIXME: Bad copies (#2543 -- same for everything else that says "bad")
@@ -795,7 +794,6 @@ mod test {
     use ast::*;
     use super::*;
     use core::io;
-    use core::iterator::IteratorUtil;
 
     #[test] fn xorpush_test () {
         let mut s = ~[];

src/libsyntax/attr.rs

@@ -19,7 +19,6 @@ use codemap::BytePos;
 use diagnostic::span_handler;
 use parse::comments::{doc_comment_style, strip_doc_comment_decoration};
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashSet;
 use core::vec;
 use extra;

src/libsyntax/diagnostic.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use codemap::{Pos, span};
 use codemap;

src/libsyntax/ext/bytes.rs

@@ -10,7 +10,6 @@
 
 /* The compiler code necessary to support the bytes! extension. */
 
-use core::iterator::IteratorUtil;
 use ast;
 use codemap::span;
 use ext::base::*;

src/libsyntax/ext/deriving/generic.rs

@@ -174,7 +174,6 @@ use opt_vec;
 
 use core::uint;
 use core::vec;
-use core::iterator::IteratorUtil;
 
 pub use self::ty::*;
 mod ty;

src/libsyntax/ext/deriving/iter_bytes.rs

@@ -16,7 +16,6 @@ use ext::base::ExtCtxt;
 use ext::build::AstBuilder;
 use ext::deriving::generic::*;
 
-use core::iterator::IteratorUtil;
 
 pub fn expand_deriving_iter_bytes(cx: @ExtCtxt,
                                   span: span,

src/libsyntax/ext/deriving/mod.rs

@@ -19,7 +19,6 @@ library.
 */
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use ast::{enum_def, ident, item, Generics, meta_item, struct_def};
 use ext::base::ExtCtxt;

src/libsyntax/ext/expand.rs

@@ -27,7 +27,6 @@ use parse::token::{ident_to_str, intern};
 use visit;
 use visit::Visitor;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 
 pub fn expand_expr(extsbox: @mut SyntaxEnv,

src/libsyntax/ext/pipes/pipec.rs

@@ -23,7 +23,6 @@ use ext::quote::rt::*;
 use opt_vec;
 use opt_vec::OptVec;
 
-use core::iterator::IteratorUtil;
 use core::vec;
 
 pub trait gen_send {

src/libsyntax/ext/tt/macro_parser.rs

@@ -22,7 +22,6 @@ use parse::parser::Parser;
 use parse::token::{Token, EOF, to_str, nonterminal, get_ident_interner, ident_to_str};
 use parse::token;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::uint;
 use core::vec;

src/libsyntax/ext/tt/transcribe.rs

@@ -19,7 +19,6 @@ use parse::token::{EOF, INTERPOLATED, IDENT, Token, nt_ident};
 use parse::token::{ident_to_str};
 use parse::lexer::TokenAndSpan;
 
-use core::iterator::IteratorUtil;
 use core::hashmap::HashMap;
 use core::option;
 

src/libsyntax/parse/comments.rs

@@ -20,7 +20,6 @@ use parse::lexer;
 use parse::token;
 use parse::token::{get_ident_interner};
 
-use core::iterator::IteratorUtil;
 use core::io;
 use core::str;
 use core::uint;

src/libsyntax/parse/lexer.rs

@@ -19,7 +19,6 @@ use ext::tt::transcribe::{dup_tt_reader};
 use parse::token;
 use parse::token::{str_to_ident};
 
-use core::iterator::IteratorUtil;
 use core::char;
 use core::either;
 use core::u64;

src/libsyntax/parse/parser.rs

@@ -92,7 +92,6 @@ use parse::{new_sub_parser_from_file, next_node_id, ParseSess};
 use opt_vec;
 use opt_vec::OptVec;
 
-use core::iterator::IteratorUtil;
 use core::either::Either;
 use core::either;
 use core::hashmap::HashSet;

src/libsyntax/print/pprust.rs

@@ -33,7 +33,6 @@ use core::char;
 use core::io;
 use core::u64;
 use core::uint;
-use core::iterator::IteratorUtil;
 
 // The @ps is stored here to prevent recursive type.
 pub enum ann_node<'self> {

src/libsyntax/visit.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 use core::prelude::*;
-use core::iterator::IteratorUtil;
 
 use abi::AbiSet;
 use ast::*;

src/test/bench/graph500-bfs.rs

@@ -21,7 +21,6 @@ use extra::arc;
 use extra::time;
 use extra::deque::Deque;
 use extra::par;
-use std::iterator::IteratorUtil;
 use std::hashmap::HashSet;
 use std::int::abs;
 use std::io;

src/test/bench/shootout-fannkuch-redux.rs

@@ -1,4 +1,3 @@
-use std::iterator::*;
 use std::from_str::FromStr;
 use std::i32::range;
 use std::os;

src/test/bench/shootout-fasta-redux.rs

@@ -1,4 +1,3 @@
-use std::iterator::IteratorUtil;
 use std::cast::transmute;
 use std::from_str::FromStr;
 use std::libc::{FILE, STDOUT_FILENO, c_int, fdopen, fputc, fputs, fwrite, size_t};

src/test/bench/shootout-nbody.rs

@@ -1,4 +1,3 @@
-use std::iterator::IteratorUtil;
 use std::f64;
 use std::from_str::FromStr;
 use std::os;

src/test/bench/shootout-spectralnorm.rs

@@ -1,4 +1,3 @@
-use std::iterator::IteratorUtil;
 use std::f64;
 use std::from_str::FromStr;
 use std::iter::ExtendedMutableIter;

src/test/bench/sudoku.rs

@@ -14,7 +14,6 @@ extern mod extra;
 
 use std::io::{ReaderUtil, WriterUtil};
 use std::io;
-use std::iterator::IteratorUtil;
 use std::os;
 use std::str;
 use std::u8;