docs(examples): Use correct arg keys

examples/12_typed_values.rs

@@ -31,7 +31,7 @@ fn main() {
     //
     // Using other methods such as unwrap_or_else(|e| println!("{}",e))
     // are possible too.
-    let len: u32 = matches.value_of_t("len").unwrap_or(10);
+    let len: u32 = matches.value_of_t("l").unwrap_or(10);
 
     println!("len ({}) + 2 = {}", len, len + 2);
 

examples/14_groups.rs

@@ -56,7 +56,7 @@ fn main() {
     let mut patch = 3;
 
     // See if --set-ver was used to set the version manually
-    let version = if let Some(ver) = matches.value_of("ver") {
+    let version = if let Some(ver) = matches.value_of("set-ver") {
         ver.to_string()
     } else {
         // Increment the one requested (in a real program, we'd reset the lower numbers)
@@ -80,7 +80,7 @@ fn main() {
     if matches.is_present("config") {
         let input = matches
             .value_of("INPUT_FILE")
-            .unwrap_or_else(|| matches.value_of("SPEC_IN").unwrap());
+            .unwrap_or_else(|| matches.value_of("spec-in").unwrap());
         println!(
             "Doing work using input {} and config {}",
             input,

examples/21_aliases.rs

@@ -18,19 +18,19 @@ fn main() {
         .get_matches();
 
     // You can check if a subcommand was used like normal
-    if matches.is_present("add") {
+    if matches.is_present("ls") {
         println!("'myapp add' was run.");
     }
 
     // You can get the independent subcommand matches (which function exactly like App matches)
-    if let Some(matches) = matches.subcommand_matches("add") {
+    if let Some(matches) = matches.subcommand_matches("ls") {
         // Safe to use unwrap() because of the required() option
         println!("Adding file: {}", matches.value_of("input").unwrap());
     }
 
     // You can also match on a subcommand's name
     match matches.subcommand_name() {
-        Some("add") => println!("'myapp add' was used"),
+        Some("ls") => println!("'myapp add' was used"),
         None => println!("No subcommand was used"),
         _ => println!("Some other subcommand was used"),
     }