From cc77cb31d4f09de6b3177a770ac6d975a3b96816 Mon Sep 17 00:00:00 2001
From: Julio Biason <j.biason@engys.com>
Date: Fri, 10 Feb 2023 13:49:52 -0300
Subject: [PATCH] Collect test

---
 dontcollectresulttest/Cargo.lock  |  7 +++++++
 dontcollectresulttest/Cargo.toml  |  8 ++++++++
 dontcollectresulttest/README.md   |  4 ++++
 dontcollectresulttest/src/main.rs | 25 +++++++++++++++++++++++++
 4 files changed, 44 insertions(+)
 create mode 100644 dontcollectresulttest/Cargo.lock
 create mode 100644 dontcollectresulttest/Cargo.toml
 create mode 100644 dontcollectresulttest/README.md
 create mode 100644 dontcollectresulttest/src/main.rs

diff --git a/dontcollectresulttest/Cargo.lock b/dontcollectresulttest/Cargo.lock
new file mode 100644
index 0000000..dc9cead
--- /dev/null
+++ b/dontcollectresulttest/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "dontcollectresulttest"
+version = "0.1.0"
diff --git a/dontcollectresulttest/Cargo.toml b/dontcollectresulttest/Cargo.toml
new file mode 100644
index 0000000..9583caf
--- /dev/null
+++ b/dontcollectresulttest/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "dontcollectresulttest"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/dontcollectresulttest/README.md b/dontcollectresulttest/README.md
new file mode 100644
index 0000000..63acd7e
--- /dev/null
+++ b/dontcollectresulttest/README.md
@@ -0,0 +1,4 @@
+# DontCollectResultTest
+
+Checking if one can change the way `.collect()` collects stuff by changing the
+expected resulting type.
diff --git a/dontcollectresulttest/src/main.rs b/dontcollectresulttest/src/main.rs
new file mode 100644
index 0000000..5be36e3
--- /dev/null
+++ b/dontcollectresulttest/src/main.rs
@@ -0,0 +1,25 @@
+fn is_even(val: u8) -> Result<u8, u8> {
+    if val % 2 == 0 {
+        Ok(val)
+    } else {
+        Err(val)
+    }
+}
+fn main() {
+    let values = [2u8, 2, 2, 2, 2, 1];
+    println!(
+        "Result<Vec>: {:?}",
+        values
+            .iter()
+            .map(|x| is_even(*x))
+            .collect::<Result<Vec<u8>, u8>>()
+    );
+
+    print!(
+        "Vec<Result>: {:?}",
+        values
+            .iter()
+            .map(|x| is_even(*x))
+            .collect::<Vec<Result<u8, u8>>>()
+    );
+}