1 files changed, 0 insertions, 54 deletions
diff --git a/rustlings/solutions/13_error_handling/errors5.rs b/rustlings/solutions/13_error_handling/errors5.rs
deleted file mode 100644
index c1424ee..0000000
--- a/rustlings/solutions/13_error_handling/errors5.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-// This exercise is an altered version of the `errors4` exercise. It uses some
-// concepts that we won't get to until later in the course, like `Box` and the
-// `From` trait. It's not important to understand them in detail right now, but
-// you can read ahead if you like. For now, think of the `Box<dyn ???>` type as
-// an "I want anything that does ???" type.
-//
-// In short, this particular use case for boxes is for when you want to own a
-// value and you care only that it is a type which implements a particular
-// trait. To do so, The `Box` is declared as of type `Box<dyn Trait>` where
-// `Trait` is the trait the compiler looks for on any value used in that
-// context. For this exercise, that context is the potential errors which
-// can be returned in a `Result`.
-
-use std::error::Error;
-use std::fmt;
-
-#[derive(PartialEq, Debug)]
-enum CreationError {
-    Negative,
-    Zero,
-}
-
-// This is required so that `CreationError` can implement `Error`.
-impl fmt::Display for CreationError {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        let description = match *self {
-            CreationError::Negative => "number is negative",
-            CreationError::Zero => "number is zero",
-        };
-        f.write_str(description)
-    }
-}
-
-impl Error for CreationError {}
-
-#[derive(PartialEq, Debug)]
-struct PositiveNonzeroInteger(u64);
-
-impl PositiveNonzeroInteger {
-    fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
-        match value {
-            x if x < 0 => Err(CreationError::Negative),
-            0 => Err(CreationError::Zero),
-            x => Ok(PositiveNonzeroInteger(x as u64)),
-        }
-    }
-}
-
-fn main() -> Result<(), Box<dyn Error>> {
-    let pretend_user_input = "42";
-    let x: i64 = pretend_user_input.parse()?;
-    println!("output={:?}", PositiveNonzeroInteger::new(x)?);
-    Ok(())
-}