Merge pull request #233 from domnikl/iterator-bug

#232 removed Iterator classes

.travis.yml

@@ -3,17 +3,10 @@ language: php
 sudo: false
 
 php:
-  - 5.3
-  - 5.4
-  - 5.5
-  - 5.6
   - 7.0
-  - hhvm
+  - 7.1
 
 matrix:
-  allow_failures:
-    - php: hhvm
-    - php: 7.0
   fast_finish: true
 
 cache:

Behavioral/Iterator/Book.php

@@ -4,27 +4,33 @@ namespace DesignPatterns\Behavioral\Iterator;
 
 class Book
 {
+    /**
+     * @var string
+     */
     private $author;
 
+    /**
+     * @var string
+     */
     private $title;
 
-    public function __construct($title, $author)
+    public function __construct(string $title, string $author)
     {
         $this->author = $author;
         $this->title = $title;
     }
 
-    public function getAuthor()
+    public function getAuthor(): string
     {
         return $this->author;
     }
 
-    public function getTitle()
+    public function getTitle(): string
     {
         return $this->title;
     }
 
-    public function getAuthorAndTitle()
+    public function getAuthorAndTitle(): string
     {
         return $this->getTitle().' by '.$this->getAuthor();
     }

Behavioral/Iterator/BookList.php

@@ -2,16 +2,17 @@
 
 namespace DesignPatterns\Behavioral\Iterator;
 
-class BookList implements \Countable
+class BookList implements \Countable, \Iterator
 {
-    private $books;
+    /**
+     * @var Book[]
+     */
+    private $books = [];
 
-    public function getBook($bookNumberToGet)
+    /**
-    {
+     * @var int
-        if (isset($this->books[$bookNumberToGet])) {
+     */
-            return $this->books[$bookNumberToGet];
+    private $currentIndex = 0;
-        }
-    }
 
     public function addBook(Book $book)
     {
@@ -21,15 +22,41 @@ class BookList implements \Countable
     public function removeBook(Book $bookToRemove)
     {
         foreach ($this->books as $key => $book) {
-            /** @var Book $book */
             if ($book->getAuthorAndTitle() === $bookToRemove->getAuthorAndTitle()) {
                 unset($this->books[$key]);
             }
         }
+
+        $this->books = array_values($this->books);
     }
 
-    public function count()
+    public function count(): int
     {
         return count($this->books);
     }
+
+    public function current(): Book
+    {
+        return $this->books[$this->currentIndex];
+    }
+
+    public function key(): int
+    {
+        return $this->currentIndex;
+    }
+
+    public function next()
+    {
+        $this->currentIndex++;
+    }
+
+    public function rewind()
+    {
+        $this->currentIndex = 0;
+    }
+
+    public function valid(): bool
+    {
+        return isset($this->books[$this->currentIndex]);
+    }
 }

Behavioral/Iterator/BookListIterator.php

@@ -1,86 +0,0 @@
-<?php
-
-namespace DesignPatterns\Behavioral\Iterator;
-
-class BookListIterator implements \Iterator
-{
-    /**
-     * @var BookList
-     */
-    private $bookList;
-
-    /**
-     * @var int
-     */
-    protected $currentBook = 0;
-
-    public function __construct(BookList $bookList)
-    {
-        $this->bookList = $bookList;
-    }
-
-    /**
-     * Return the current book.
-     *
-     * @link http://php.net/manual/en/iterator.current.php
-     *
-     * @return Book Can return any type.
-     */
-    public function current()
-    {
-        return $this->bookList->getBook($this->currentBook);
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Move forward to next element.
-     *
-     * @link http://php.net/manual/en/iterator.next.php
-     *
-     * @return void Any returned value is ignored.
-     */
-    public function next()
-    {
-        $this->currentBook++;
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Return the key of the current element.
-     *
-     * @link http://php.net/manual/en/iterator.key.php
-     *
-     * @return mixed scalar on success, or null on failure.
-     */
-    public function key()
-    {
-        return $this->currentBook;
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Checks if current position is valid.
-     *
-     * @link http://php.net/manual/en/iterator.valid.php
-     *
-     * @return bool The return value will be casted to boolean and then evaluated.
-     *              Returns true on success or false on failure.
-     */
-    public function valid()
-    {
-        return null !== $this->bookList->getBook($this->currentBook);
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Rewind the Iterator to the first element.
-     *
-     * @link http://php.net/manual/en/iterator.rewind.php
-     *
-     * @return void Any returned value is ignored.
-     */
-    public function rewind()
-    {
-        $this->currentBook = 0;
-    }
-}

Behavioral/Iterator/BookListReverseIterator.php

@@ -1,87 +0,0 @@
-<?php
-
-namespace DesignPatterns\Behavioral\Iterator;
-
-class BookListReverseIterator implements \Iterator
-{
-    /**
-     * @var BookList
-     */
-    private $bookList;
-
-    /**
-     * @var int
-     */
-    protected $currentBook = 0;
-
-    public function __construct(BookList $bookList)
-    {
-        $this->bookList = $bookList;
-        $this->currentBook = $this->bookList->count() - 1;
-    }
-
-    /**
-     * Return the current book.
-     *
-     * @link http://php.net/manual/en/iterator.current.php
-     *
-     * @return Book Can return any type.
-     */
-    public function current()
-    {
-        return $this->bookList->getBook($this->currentBook);
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Move forward to next element.
-     *
-     * @link http://php.net/manual/en/iterator.next.php
-     *
-     * @return void Any returned value is ignored.
-     */
-    public function next()
-    {
-        $this->currentBook--;
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Return the key of the current element.
-     *
-     * @link http://php.net/manual/en/iterator.key.php
-     *
-     * @return mixed scalar on success, or null on failure.
-     */
-    public function key()
-    {
-        return $this->currentBook;
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Checks if current position is valid.
-     *
-     * @link http://php.net/manual/en/iterator.valid.php
-     *
-     * @return bool The return value will be casted to boolean and then evaluated.
-     *              Returns true on success or false on failure.
-     */
-    public function valid()
-    {
-        return null !== $this->bookList->getBook($this->currentBook);
-    }
-
-    /**
-     * (PHP 5 &gt;= 5.0.0)<br/>
-     * Rewind the Iterator to the first element.
-     *
-     * @link http://php.net/manual/en/iterator.rewind.php
-     *
-     * @return void Any returned value is ignored.
-     */
-    public function rewind()
-    {
-        $this->currentBook = $this->bookList->count() - 1;
-    }
-}

Behavioral/Iterator/README.rst

@@ -4,8 +4,7 @@
 Purpose
 -------
 
-To make an object iterable and to make it appear like a collection of
+To make an object iterable and to make it appear like a collection of objects.
-objects.
 
 Examples
 --------
@@ -45,18 +44,6 @@ BookList.php
    :language: php
    :linenos:
 
-BookListIterator.php
-
-.. literalinclude:: BookListIterator.php
-   :language: php
-   :linenos:
-
-BookListReverseIterator.php
-
-.. literalinclude:: BookListReverseIterator.php
-   :language: php
-   :linenos:
-
 Test
 ----
 
@@ -67,4 +54,4 @@ Tests/IteratorTest.php
    :linenos:
 
 .. _`GitHub`: https://github.com/domnikl/DesignPatternsPHP/tree/master/Behavioral/Iterator
-.. __: http://en.wikipedia.org/wiki/Iterator_pattern
+.. __: http://en.wikipedia.org/wiki/Iterator_pattern

Behavioral/Iterator/Tests/IteratorTest.php

@@ -9,66 +9,68 @@ use DesignPatterns\Behavioral\Iterator\BookListReverseIterator;
 
 class IteratorTest extends \PHPUnit_Framework_TestCase
 {
-    /**
+    public function testCanIterateOverBookList()
-     * @var BookList
-     */
-    protected $bookList;
-
-    protected function setUp()
     {
-        $this->bookList = new BookList();
+        $bookList = new BookList();
-        $this->bookList->addBook(new Book('Learning PHP Design Patterns', 'William Sanders'));
+        $bookList->addBook(new Book('Learning PHP Design Patterns', 'William Sanders'));
-        $this->bookList->addBook(new Book('Professional Php Design Patterns', 'Aaron Saray'));
+        $bookList->addBook(new Book('Professional Php Design Patterns', 'Aaron Saray'));
-        $this->bookList->addBook(new Book('Clean Code', 'Robert C. Martin'));
+        $bookList->addBook(new Book('Clean Code', 'Robert C. Martin'));
-    }
 
-    public function expectedAuthors()
+        $books = [];
-    {
+
-        return array(
+        foreach ($bookList as $book) {
-            array(
+            $books[] = $book->getAuthorAndTitle();
-                array(
+        }
-                    'Learning PHP Design Patterns by William Sanders',
+
-                    'Professional Php Design Patterns by Aaron Saray',
+        $this->assertEquals(
-                    'Clean Code by Robert C. Martin',
+            [
-                ),
+                'Learning PHP Design Patterns by William Sanders',
-            ),
+                'Professional Php Design Patterns by Aaron Saray',
+                'Clean Code by Robert C. Martin',
+            ],
+            $books
         );
     }
 
-    /**
+    public function testCanIterateOverBookListAfterRemovingBook()
-     * @dataProvider expectedAuthors
-     */
-    public function testUseAIteratorAndValidateAuthors($expected)
     {
-        $iterator = new BookListIterator($this->bookList);
+        $book = new Book('Clean Code', 'Robert C. Martin');
+        $book2 = new Book('Professional Php Design Patterns', 'Aaron Saray');
 
-        while ($iterator->valid()) {
+        $bookList = new BookList();
-            $expectedBook = array_shift($expected);
+        $bookList->addBook($book);
-            $this->assertEquals($expectedBook, $iterator->current()->getAuthorAndTitle());
+        $bookList->addBook($book2);
-            $iterator->next();
+        $bookList->removeBook($book);
+
+        $books = [];
+        foreach ($bookList as $book) {
+            $books[] = $book->getAuthorAndTitle();
         }
+
+        $this->assertEquals(
+            ['Professional Php Design Patterns by Aaron Saray'],
+            $books
+        );
     }
 
-    /**
+    public function testCanAddBookToList()
-     * @dataProvider expectedAuthors
-     */
-    public function testUseAReverseIteratorAndValidateAuthors($expected)
     {
-        $iterator = new BookListReverseIterator($this->bookList);
+        $book = new Book('Clean Code', 'Robert C. Martin');
 
-        while ($iterator->valid()) {
+        $bookList = new BookList();
-            $expectedBook = array_pop($expected);
+        $bookList->addBook($book);
-            $this->assertEquals($expectedBook, $iterator->current()->getAuthorAndTitle());
+
-            $iterator->next();
+        $this->assertCount(1, $bookList);
-        }
     }
 
-    /**
+    public function testCanRemoveBookFromList()
-     * Test BookList Remove.
-     */
-    public function testBookRemove()
     {
-        $this->bookList->removeBook($this->bookList->getBook(0));
+        $book = new Book('Clean Code', 'Robert C. Martin');
-        $this->assertEquals($this->bookList->count(), 2);
+
+        $bookList = new BookList();
+        $bookList->addBook($book);
+        $bookList->removeBook($book);
+
+        $this->assertCount(0, $bookList);
     }
 }

composer.json

@@ -8,8 +8,11 @@
         }
     ],
     "minimum-stability": "stable",
+    "require": {
+        "php": ">=7.0"
+    },
     "require-dev": {
-        "phpunit/phpunit": "^4.6",
+        "phpunit/phpunit": ">=5.5.4",
         "squizlabs/php_codesniffer": "1.5.*"
     },
     "autoload": {

composer.lock

@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "ccc9bc820717ca4dc310248ad4a69f21",
+    "hash": "fc06bf31eb6cf4b21a7923e186abfb9d",
-    "content-hash": "f9ca7d34db86fa55e8dc649f84d8b4c7",
+    "content-hash": "c829a84cbe749d776139a3e9ebdd3094",
     "packages": [],
     "packages-dev": [
         {
@@ -63,38 +63,129 @@
             "time": "2015-06-14 21:17:01"
         },
         {
-            "name": "phpdocumentor/reflection-docblock",
+            "name": "myclabs/deep-copy",
-            "version": "2.0.4",
+            "version": "1.5.4",
             "source": {
                 "type": "git",
-                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "d68dbdc53dc358a816f00b300704702b2eaff7b8"
+                "reference": "ea74994a3dc7f8d2f65a06009348f2d63c81e61f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/d68dbdc53dc358a816f00b300704702b2eaff7b8",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/ea74994a3dc7f8d2f65a06009348f2d63c81e61f",
-                "reference": "d68dbdc53dc358a816f00b300704702b2eaff7b8",
+                "reference": "ea74994a3dc7f8d2f65a06009348f2d63c81e61f",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
+                "php": ">=5.4.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "doctrine/collections": "1.*",
+                "phpunit/phpunit": "~4.1"
             },
-            "suggest": {
+            "type": "library",
-                "dflydev/markdown": "~1.0",
+            "autoload": {
-                "erusev/parsedown": "~1.0"
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Create deep copies (clones) of your objects",
+            "homepage": "https://github.com/myclabs/DeepCopy",
+            "keywords": [
+                "clone",
+                "copy",
+                "duplicate",
+                "object",
+                "object graph"
+            ],
+            "time": "2016-09-16 13:37:59"
+        },
+        {
+            "name": "phpdocumentor/reflection-common",
+            "version": "1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
+                "reference": "144c307535e82c8fdcaacbcfc1d6d8eeb896687c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/144c307535e82c8fdcaacbcfc1d6d8eeb896687c",
+                "reference": "144c307535e82c8fdcaacbcfc1d6d8eeb896687c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0.x-dev"
+                    "dev-master": "1.0.x-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
+                "psr-4": {
-                    "phpDocumentor": [
+                    "phpDocumentor\\Reflection\\": [
+                        "src"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jaap van Otterdijk",
+                    "email": "opensource@ijaap.nl"
+                }
+            ],
+            "description": "Common reflection classes used by phpdocumentor to reflect the code structure",
+            "homepage": "http://www.phpdoc.org",
+            "keywords": [
+                "FQSEN",
+                "phpDocumentor",
+                "phpdoc",
+                "reflection",
+                "static analysis"
+            ],
+            "time": "2015-12-27 11:43:31"
+        },
+        {
+            "name": "phpdocumentor/reflection-docblock",
+            "version": "3.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "reference": "9270140b940ff02e58ec577c237274e92cd40cdd"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/9270140b940ff02e58ec577c237274e92cd40cdd",
+                "reference": "9270140b940ff02e58ec577c237274e92cd40cdd",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5",
+                "phpdocumentor/reflection-common": "^1.0@dev",
+                "phpdocumentor/type-resolver": "^0.2.0",
+                "webmozart/assert": "^1.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "^0.9.4",
+                "phpunit/phpunit": "^4.4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
                         "src/"
                     ]
                 }
@@ -106,37 +197,87 @@
             "authors": [
                 {
                     "name": "Mike van Riel",
-                    "email": "mike.vanriel@naenius.com"
+                    "email": "me@mikevanriel.com"
                 }
             ],
-            "time": "2015-02-03 12:10:50"
+            "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
+            "time": "2016-06-10 09:48:41"
         },
         {
-            "name": "phpspec/prophecy",
+            "name": "phpdocumentor/type-resolver",
-            "version": "v1.5.0",
+            "version": "0.2",
             "source": {
                 "type": "git",
-                "url": "https://github.com/phpspec/prophecy.git",
+                "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "4745ded9307786b730d7a60df5cb5a6c43cf95f7"
+                "reference": "b39c7a5b194f9ed7bd0dd345c751007a41862443"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/4745ded9307786b730d7a60df5cb5a6c43cf95f7",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/b39c7a5b194f9ed7bd0dd345c751007a41862443",
-                "reference": "4745ded9307786b730d7a60df5cb5a6c43cf95f7",
+                "reference": "b39c7a5b194f9ed7bd0dd345c751007a41862443",
                 "shasum": ""
             },
             "require": {
-                "doctrine/instantiator": "^1.0.2",
+                "php": ">=5.5",
-                "phpdocumentor/reflection-docblock": "~2.0",
+                "phpdocumentor/reflection-common": "^1.0"
-                "sebastian/comparator": "~1.1"
             },
             "require-dev": {
-                "phpspec/phpspec": "~2.0"
+                "mockery/mockery": "^0.9.4",
+                "phpunit/phpunit": "^5.2||^4.8.24"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.4.x-dev"
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                }
+            ],
+            "time": "2016-06-10 07:14:17"
+        },
+        {
+            "name": "phpspec/prophecy",
+            "version": "v1.6.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpspec/prophecy.git",
+                "reference": "58a8137754bc24b25740d4281399a4a3596058e0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/58a8137754bc24b25740d4281399a4a3596058e0",
+                "reference": "58a8137754bc24b25740d4281399a4a3596058e0",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/instantiator": "^1.0.2",
+                "php": "^5.3|^7.0",
+                "phpdocumentor/reflection-docblock": "^2.0|^3.0.2",
+                "sebastian/comparator": "^1.1",
+                "sebastian/recursion-context": "^1.0"
+            },
+            "require-dev": {
+                "phpspec/phpspec": "^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.6.x-dev"
                 }
             },
             "autoload": {
@@ -169,43 +310,44 @@
                 "spy",
                 "stub"
             ],
-            "time": "2015-08-13 10:07:40"
+            "time": "2016-06-07 08:13:47"
         },
         {
             "name": "phpunit/php-code-coverage",
-            "version": "2.2.4",
+            "version": "4.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
-                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979"
+                "reference": "5f3f7e736d6319d5f1fc402aff8b026da26709a3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/eabf68b476ac7d0f73793aada060f1c1a9bf8979",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/5f3f7e736d6319d5f1fc402aff8b026da26709a3",
-                "reference": "eabf68b476ac7d0f73793aada060f1c1a9bf8979",
+                "reference": "5f3f7e736d6319d5f1fc402aff8b026da26709a3",
                 "shasum": ""
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@@ -1029,7 +1328,57 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2015-10-11 09:39:48"
+            "time": "2016-09-02 02:12:52"
+        },
+        {
+            "name": "webmozart/assert",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/webmozart/assert.git",
+                "reference": "bb2d123231c095735130cc8f6d31385a44c7b308"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/bb2d123231c095735130cc8f6d31385a44c7b308",
+                "reference": "bb2d123231c095735130cc8f6d31385a44c7b308",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3|^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6",
+                "sebastian/version": "^1.0.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Webmozart\\Assert\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@gmail.com"
+                }
+            ],
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "time": "2016-08-09 15:02:57"
         }
     ],
     "aliases": [],
@@ -1037,6 +1386,8 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "php": ">=7.0"
+    },
     "platform-dev": []
 }

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@@ -1,4 +1,4 @@
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@@ -20,9 +20,7 @@ msgid "Purpose"
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-"objects."
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 #: ../../Behavioral/Iterator/README.rst:11

locale/es/LC_MESSAGES/Behavioral/Iterator/README.po

@@ -1,4 +1,4 @@
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locale/ru/LC_MESSAGES/Behavioral/Iterator/README.po

@@ -20,9 +20,7 @@ msgid "Purpose"
 msgstr "Назначение"
 
 #: ../../Behavioral/Iterator/README.rst:7
-msgid ""
+msgid "To make an object iterable and to make it appear like a collection of objects."
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locale/zh_CN/LC_MESSAGES/Behavioral/Iterator/README.po

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