From 3ce79da0b12cf23f0976feb4ffa9c1d49a717e92 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Mon, 23 Mar 2015 16:22:04 -0700
Subject: [PATCH] len() == 0 => is_empty()

---
 src/bin/bench.rs | 2 +-
 src/bin/cargo.rs | 2 +-
 src/bin/run.rs   | 2 +-
 src/bin/test.rs  | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/bin/bench.rs b/src/bin/bench.rs
index bdbcc96a8..735b2e0d4 100644
--- a/src/bin/bench.rs
+++ b/src/bin/bench.rs
@@ -67,7 +67,7 @@ pub fn execute(options: Options, config: &Config) -> CliResult<Option<()>> {
             exec_engine: None,
             release: true,
             mode: ops::CompileMode::Bench,
-            filter: if benches.len() == 0 {
+            filter: if benches.is_empty() {
                 ops::CompileFilter::Everything
             } else {
                 ops::CompileFilter::Only {
diff --git a/src/bin/cargo.rs b/src/bin/cargo.rs
index 0ad3a53c2..7c04323cd 100644
--- a/src/bin/cargo.rs
+++ b/src/bin/cargo.rs
@@ -105,7 +105,7 @@ fn execute(flags: Flags, config: &Config) -> CliResult<Option<()>> {
         // For the commands `cargo` and `cargo help`, re-execute ourselves as
         // `cargo -h` so we can go through the normal process of printing the
         // help message.
-        "" | "help" if flags.arg_args.len() == 0 => {
+        "" | "help" if flags.arg_args.is_empty() => {
             config.shell().set_verbose(true);
             let args = &["cargo".to_string(), "-h".to_string()];
             let r = cargo::call_main_without_stdin(execute, config, USAGE, args,
diff --git a/src/bin/run.rs b/src/bin/run.rs
index 8093d5b65..9ff8728fa 100644
--- a/src/bin/run.rs
+++ b/src/bin/run.rs
@@ -64,7 +64,7 @@ pub fn execute(options: Options, config: &Config) -> CliResult<Option<()>> {
         exec_engine: None,
         release: options.flag_release,
         mode: ops::CompileMode::Build,
-        filter: if examples.len() == 0 && bins.len() == 0 {
+        filter: if examples.is_empty() && bins.is_empty() {
             ops::CompileFilter::Everything
         } else {
             ops::CompileFilter::Only {
diff --git a/src/bin/test.rs b/src/bin/test.rs
index b6f9a12e9..1b09e6d2c 100644
--- a/src/bin/test.rs
+++ b/src/bin/test.rs
@@ -74,7 +74,7 @@ pub fn execute(options: Options, config: &Config) -> CliResult<Option<()>> {
             exec_engine: None,
             release: false,
             mode: ops::CompileMode::Test,
-            filter: if tests.len() == 0 && bins.len() == 0 {
+            filter: if tests.is_empty() && bins.is_empty() {
                 ops::CompileFilter::Everything
             } else {
                 ops::CompileFilter::Only {
-- 
2.30.2