From db990962691430f82012e52c3da01a1767bef370 Mon Sep 17 00:00:00 2001
From: vallentin <vallentinsource@gmail.com>
Date: Tue, 4 Feb 2020 00:14:45 +0100
Subject: [PATCH 1/2] Added simple validate example

---
 examples/validate_input.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 examples/validate_input.rs

diff --git a/examples/validate_input.rs b/examples/validate_input.rs
new file mode 100644
index 00000000..01df4ee8
--- /dev/null
+++ b/examples/validate_input.rs
@@ -0,0 +1,19 @@
+extern crate dialoguer;
+
+use dialoguer::Input;
+
+fn main() {
+    let mail: String = Input::new()
+        .with_prompt("Enter email")
+        .validate_with(|input: &str| -> Result<(), &str> {
+            if input.contains('@') {
+                Ok(())
+            } else {
+                Err("This is not a mail address")
+            }
+        })
+        .interact()
+        .unwrap();
+
+    println!("Email: {}", mail);
+}

From 340b46b93642918154bce3320c803a865a80f1e8 Mon Sep 17 00:00:00 2001
From: vallentin <vallentinsource@gmail.com>
Date: Tue, 4 Feb 2020 00:17:30 +0100
Subject: [PATCH 2/2] Added validate example to docs

---
 src/prompts.rs | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/src/prompts.rs b/src/prompts.rs
index 0a37929d..1b6ee42f 100644
--- a/src/prompts.rs
+++ b/src/prompts.rs
@@ -222,6 +222,23 @@ where
     }
 
     /// Registers a validator.
+    ///
+    /// # Example
+    ///
+    /// ```no_run
+    /// # use dialoguer::Input;
+    /// let mail: String = Input::new()
+    ///     .with_prompt("Enter email")
+    ///     .validate_with(|input: &str| -> Result<(), &str> {
+    ///         if input.contains('@') {
+    ///             Ok(())
+    ///         } else {
+    ///             Err("This is not a mail address")
+    ///         }
+    ///     })
+    ///     .interact()
+    ///     .unwrap();
+    /// ```
     pub fn validate_with<V: Validator + 'static>(&mut self, validator: V) -> &mut Input<'a, T> {
         let old_validator_func = self.validator.take();
         self.validator = Some(Box::new(move |value: &str| -> Option<String> {