Auto merge of #23682 - tamird:DRY-is-empty, r=alexcrichton

r? @alexcrichton 

2 files changed, 3 insertions, 3 deletions

diff --git a/src/libstd/sys/common/backtrace.rs b/src/libstd/sys/common/backtrace.rs
index cd118b3c9ee..580d970af0c 100644
--- a/src/libstd/sys/common/backtrace.rs
+++ b/src/libstd/sys/common/backtrace.rs
@@ -76,7 +76,7 @@ pub fn demangle(writer: &mut Write, s: &str) -> io::Result<()> {
         try!(writer.write_all(s.as_bytes()));
     } else {
         let mut first = true;
-        while inner.len() > 0 {
+        while !inner.is_empty() {
             if !first {
                 try!(writer.write_all(b"::"));
             } else {
@@ -89,7 +89,7 @@ pub fn demangle(writer: &mut Write, s: &str) -> io::Result<()> {
             let i: usize = inner[.. (inner.len() - rest.len())].parse().unwrap();
             inner = &rest[i..];
             rest = &rest[..i];
-            while rest.len() > 0 {
+            while !rest.is_empty() {
                 if rest.starts_with("$") {
                     macro_rules! demangle {
                         ($($pat:expr, => $demangled:expr),*) => ({
diff --git a/src/libstd/sys/windows/process2.rs b/src/libstd/sys/windows/process2.rs
index fdb47eb8c80..16c2a9125ea 100644
--- a/src/libstd/sys/windows/process2.rs
+++ b/src/libstd/sys/windows/process2.rs
@@ -381,7 +381,7 @@ fn make_command_line(prog: &OsStr, args: &[OsString]) -> Vec<u16> {
         // it will be dropped entirely when parsed on the other end.
         let arg_bytes = &arg.as_inner().inner.as_inner();
         let quote = arg_bytes.iter().any(|c| *c == b' ' || *c == b'\t')
-            || arg_bytes.len() == 0;
+            || arg_bytes.is_empty();
         if quote {
             cmd.push('"' as u16);
         }