fix: revert doc test change

Author: CurryPseudo

README.md

@@ -161,6 +161,7 @@ pub struct Particle {
 will generate structs that looks like this:
 
 ```rust
+use soa_derive::StructOfArray;
 pub struct PointVec {
     x: Vec<f32>,
     y: Vec<f32>,

example/lib.rs

@@ -1,7 +1,7 @@
 //! This crate is an example for the [`soa_derive`] crate functionalities. All
 //! the code is generated by a single file:
 //!
-//! ```ignore
+//! ```no_run
 //! #[macro_use]
 //! extern crate soa_derive;
 //! # fn main() {

src/lib.rs

@@ -2,7 +2,7 @@
 //! automatically generate code from a given struct `T` that allow to replace
 //! `Vec<T>` with a struct of arrays. For example, the following code
 //!
-//! ```ignore
+//! ```
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! #[derive(StructOfArray)]
@@ -17,7 +17,7 @@
 //!
 //! will generate a `CheeseVec` struct that looks like this:
 //!
-//! ```ignore
+//! ```
 //! pub struct CheeseVec {
 //!     pub smell: Vec<f64>,
 //!     pub color: Vec<(f64, f64, f64)>,
@@ -38,7 +38,7 @@
 //! (such as `Debug` or `PartialEq`), you can add an attribute `#[soa_derive =
 //! "Debug, PartialEq"]` to the struct declaration.
 //!
-//! ```ignore
+//! ```
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! #[derive(Debug, PartialEq, StructOfArray)]
@@ -57,7 +57,7 @@
 //! attribute `#[soa_attr(Vec, cfg_attr(test, derive(PartialEq)))]` to the
 //! struct declaration.
 //!
-//! ```ignore
+//! ```
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! #[derive(Debug, PartialEq, StructOfArray)]
@@ -108,7 +108,7 @@
 //!
 //! It is possible to iterate over the values in a `CheeseVec`
 //!
-//! ```ignore
+//! ```no_run
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! # #[derive(Debug, PartialEq, StructOfArray)]
@@ -136,7 +136,7 @@
 //! fields from memory when iterating over the vector. In order to do so, one
 //! can manually pick the needed fields:
 //!
-//! ```ignore
+//! ```no_run
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! # #[derive(Debug, PartialEq, StructOfArray)]
@@ -161,7 +161,7 @@
 //! In order to iterate over multiple fields at the same time, one can use the
 //! [soa_zip!](macro.soa_zip.html) macro.
 //!
-//! ```ignore
+//! ```no_run
 //! # #[macro_use] extern crate soa_derive;
 //! # fn main() {
 //! # #[derive(Debug, PartialEq, StructOfArray)]
@@ -189,7 +189,8 @@
 //! 
 //! For example, the following code
 //! 
-//! ```ignore
+//! ```
+//! use soa_derive::StructOfArray;
 //! #[derive(StructOfArray)]
 //! pub struct Point {
 //!     x: f32,
@@ -205,7 +206,7 @@
 //! 
 //! will generate structs that looks like this:
 //! 
-//! ```ignore
+//! ```
 //! pub struct PointVec {
 //!     x: Vec<f32>,
 //!     y: Vec<f32>,
@@ -315,7 +316,7 @@ pub trait SoAIndexMut<T>: private_soa_indexes::Sealed {
 /// to the fields, which can be mutable references if the field name is prefixed
 /// with `mut`.
 ///
-/// ```ignore
+/// ```
 /// # #[macro_use] extern crate soa_derive;
 /// # fn main() {
 /// #[derive(StructOfArray)]
@@ -346,7 +347,7 @@ pub trait SoAIndexMut<T>: private_soa_indexes::Sealed {
 /// iterator will yields elements until any of the fields or one external
 /// iterator returns None.
 ///
-/// ```ignore
+/// ```
 /// # #[macro_use] extern crate soa_derive;
 /// # fn main() {
 /// # #[derive(StructOfArray)]