change string literal into char literal

2 files changed, 2 insertions, 2 deletions

diff --git a/src/app.rs b/src/app.rs
index f4ce318..291bebe 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -206,7 +206,7 @@ pub fn build() -> App<'static, 'static> {
 
 fn validate_date_argument(arg: String) -> Result<(), String> {
     use std::error::Error;
-    if arg.starts_with("+") {
+    if arg.starts_with('+') {
         validate_time_format(&arg).map_err(|err| err.description().to_string())
     } else if &arg == "date" {
         Result::Ok(())
diff --git a/src/flags.rs b/src/flags.rs
index 900fe58..d8e8c43 100644
--- a/src/flags.rs
+++ b/src/flags.rs
@@ -260,7 +260,7 @@ impl<'a> From<&'a str> for DateFlag {
         match time {
             "date" => DateFlag::Date,
             "relative" => DateFlag::Relative,
-            time if time.starts_with("+") => DateFlag::Formatted(time[1..].to_owned()),
+            time if time.starts_with('+') => DateFlag::Formatted(time[1..].to_owned()),
             _ => panic!("invalid \"time\" flag: {}", time),
         }
     }