From de8c842468112bda60f19d225fecba0e23b710d7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jure=20=C5=A0orn?= <sornjure@gmail.com>
Date: Thu, 27 Jun 2019 19:43:28 +0200
Subject: [PATCH] Duck iterator
---
README.md | 18 ++++++++++++++++++
index.html | 14 ++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/README.md b/README.md
index 1bd66b9..e1cd5d6 100644
--- a/README.md
+++ b/README.md
@@ -1046,6 +1046,24 @@ class MyCollection:
yield el
```
+### Iterator
+```python
+class Counter:
+ def __init__(self):
+ self.i = 0
+ def __next__(self):
+ self.i += 1
+ return self.i
+ def __iter__(self):
+ return self
+```
+
+```python
+>>> counter = Counter()
+>>> next(counter), next(counter), next(counter)
+(1, 2, 3)
+```
+
### Callable
```python
class Counter:
diff --git a/index.html b/index.html
index fea4acc..bc6664b 100644
--- a/index.html
+++ b/index.html
@@ -981,6 +981,20 @@ creature = Creature(Point(<span class="hljs-number">0</span>, <span class="hljs
<span class="hljs-keyword">for</span> el <span class="hljs-keyword">in</span> self.a:
<span class="hljs-keyword">yield</span> el
</code></pre>
+<h3 id="iterator-1">Iterator</h3>
+<pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Counter</span>:</span>
+ <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__init__</span><span class="hljs-params">(self)</span>:</span>
+ self.i = <span class="hljs-number">0</span>
+ <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__next__</span><span class="hljs-params">(self)</span>:</span>
+ self.i += <span class="hljs-number">1</span>
+ <span class="hljs-keyword">return</span> self.i
+ <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__iter__</span><span class="hljs-params">(self)</span>:</span>
+ <span class="hljs-keyword">return</span> self
+</code></pre>
+<pre><code class="python language-python hljs"><span class="hljs-meta">>>> </span>counter = Counter()
+<span class="hljs-meta">>>> </span>next(counter), next(counter), next(counter)
+(<span class="hljs-number">1</span>, <span class="hljs-number">2</span>, <span class="hljs-number">3</span>)
+</code></pre>
<h3 id="callable">Callable</h3>
<pre><code class="python language-python hljs"><span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Counter</span>:</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">__init__</span><span class="hljs-params">(self)</span>:</span>