1 files changed, 0 insertions, 37 deletions
diff --git a/clap/examples/15_custom_validator.rs b/clap/examples/15_custom_validator.rs
deleted file mode 100644
index a5c0d42..0000000
--- a/clap/examples/15_custom_validator.rs
+++ /dev/null
@@ -1,37 +0,0 @@
-extern crate clap;
-
-use clap::{App, Arg};
-
-fn main() {
-    // You can define a function (or a closure) to use as a validator to argument values. The
-    // function must accept a String and return Result<(), String> where Err(String) is the message
-    // displayed to the user.
-
-    let matches = App::new("myapp")
-                        // Application logic goes here...
-                        .arg(Arg::with_name("input")
-                                     .help("the input file to use")
-                                     .index(1)
-                                     .required(true)
-                                     // You can pass in a closure, or a function
-                                     .validator(is_png))
-                        .get_matches();
-
-    // Here we can call .unwrap() because the argument is required.
-    println!("The .PNG file is: {}", matches.value_of("input").unwrap());
-}
-
-fn is_png(val: String) -> Result<(), String> {
-    // val is the argument value passed in by the user
-    // val has type of String.
-    if val.ends_with(".png") {
-        Ok(())
-    } else {
-        // clap automatically adds "error: " to the beginning
-        // of the message.
-        Err(String::from("the file format must be png."))
-    }
-    // Of course, you can do more complicated validation as
-    // well, but for the simplicity, this example only checks
-    // if the value passed in ends with ".png" or not.
-}