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<h1 class="entry-title"><a href="/blog/2014/09/21/ruby-with-learning-japanese/">Ruby With Learning Japanese</a></h1>
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<time datetime="2014-09-21T16:04:49+07:00" pubdate data-updated="true">Sep 21<sup>st</sup>, 2014</time>
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<div class="entry-content"><p>I started learn Japanese 3 years ago. It last 3 months. No i want to learn it again, so i review <code>Hiragana</code> and <code>Katakana</code>. Today i start with <code>Hiragana</code>. I want to find a way can help me with this thing, and beside that, i am a developer, so i want to use my knowledge in this major apply to learn Japanese.</p>
<p>I created 2 files. One is <code>hiragana.rb</code> that shows <code>romanji</code> character and i will write down <code>Hiragana</code> character. The other is <code>hiragana_reading.rb</code> that shows <code>Hiragana</code> character and i will read it out loud.</p>
<h1>Writing</h1>
<figure class='code'><figcaption><span>hiragana.rb</span></figcaption>
<div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
<span class='line-number'>14</span>
<span class='line-number'>15</span>
<span class='line-number'>16</span>
<span class='line-number'>17</span>
<span class='line-number'>18</span>
<span class='line-number'>19</span>
<span class='line-number'>20</span>
<span class='line-number'>21</span>
<span class='line-number'>22</span>
<span class='line-number'>23</span>
<span class='line-number'>24</span>
<span class='line-number'>25</span>
<span class='line-number'>26</span>
<span class='line-number'>27</span>
<span class='line-number'>28</span>
<span class='line-number'>29</span>
<span class='line-number'>30</span>
<span class='line-number'>31</span>
<span class='line-number'>32</span>
<span class='line-number'>33</span>
<span class='line-number'>34</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="no">TIME_SLEEP</span> <span class="o">=</span> <span class="mi">5</span>
</span><span class='line'><span class="no">MAX_EXIST</span> <span class="o">=</span> <span class="mi">5</span>
</span><span class='line'><span class="n">hiragana</span> <span class="o">=</span> <span class="o">[</span><span class="s1">'a'</span><span class="p">,</span> <span class="s1">'i'</span><span class="p">,</span> <span class="s1">'u'</span><span class="p">,</span> <span class="s1">'e'</span><span class="p">,</span> <span class="s1">'o'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ka'</span><span class="p">,</span> <span class="s1">'ki'</span><span class="p">,</span> <span class="s1">'ku'</span><span class="p">,</span> <span class="s1">'ke'</span><span class="p">,</span> <span class="s1">'ko'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'sa'</span><span class="p">,</span> <span class="s1">'si'</span><span class="p">,</span> <span class="s1">'su'</span><span class="p">,</span> <span class="s1">'se'</span><span class="p">,</span> <span class="s1">'so'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ta'</span><span class="p">,</span> <span class="s1">'chi'</span><span class="p">,</span> <span class="s1">'tsu'</span><span class="p">,</span> <span class="s1">'te'</span><span class="p">,</span> <span class="s1">'to'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'na'</span><span class="p">,</span> <span class="s1">'ni'</span><span class="p">,</span> <span class="s1">'nu'</span><span class="p">,</span> <span class="s1">'ne'</span><span class="p">,</span> <span class="s1">'no'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ha'</span><span class="p">,</span> <span class="s1">'hi'</span><span class="p">,</span> <span class="s1">'fu'</span><span class="p">,</span> <span class="s1">'he'</span><span class="p">,</span> <span class="s1">'ho'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ma'</span><span class="p">,</span> <span class="s1">'mi'</span><span class="p">,</span> <span class="s1">'mu'</span><span class="p">,</span> <span class="s1">'me'</span><span class="p">,</span> <span class="s1">'mo'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ya'</span><span class="p">,</span> <span class="s1">'yu'</span><span class="p">,</span> <span class="s1">'yo'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ra'</span><span class="p">,</span> <span class="s1">'ri'</span><span class="p">,</span> <span class="s1">'ru'</span><span class="p">,</span> <span class="s1">'re'</span><span class="p">,</span> <span class="s1">'ro'</span><span class="p">,</span> <span class="s1">'wa'</span><span class="p">,</span> <span class="s1">'o'</span><span class="p">,</span> <span class="s1">'n'</span><span class="o">]</span>
</span><span class='line'><span class="n">mark</span> <span class="o">=</span> <span class="p">{}</span>
</span><span class='line'><span class="n">hiragana</span><span class="o">.</span><span class="n">each</span> <span class="p">{</span><span class="o">|</span><span class="n">h</span><span class="o">|</span> <span class="n">mark</span><span class="o">[</span><span class="n">h</span><span class="o">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">}</span>
</span><span class='line'><span class="k">def</span> <span class="nf">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span><span class='line'> <span class="k">if</span> <span class="p">(</span><span class="n">hiragana</span><span class="o">.</span><span class="n">size</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span>
</span><span class='line'> <span class="k">while</span> <span class="kp">true</span>
</span><span class='line'> <span class="n">a</span> <span class="o">=</span> <span class="n">hiragana</span><span class="o">.</span><span class="n">sample</span>
</span><span class='line'> <span class="k">if</span> <span class="p">(</span><span class="n">mark</span><span class="o">[</span><span class="n">a</span><span class="o">]</span> <span class="o"><</span> <span class="no">MAX_EXIST</span><span class="p">)</span>
</span><span class='line'> <span class="nb">sleep</span><span class="p">(</span><span class="no">TIME_SLEEP</span><span class="p">)</span>
</span><span class='line'> <span class="nb">p</span> <span class="n">a</span>
</span><span class='line'> <span class="n">mark</span><span class="o">[</span><span class="n">a</span><span class="o">]</span> <span class="o">+=</span> <span class="mi">1</span>
</span><span class='line'> <span class="nb">puts</span> <span class="s2">"</span><span class="se">\e</span><span class="s2">[H</span><span class="se">\e</span><span class="s2">[2J"</span>
</span><span class='line'> <span class="k">else</span>
</span><span class='line'> <span class="n">hiragana</span> <span class="o">-=</span> <span class="o">[</span><span class="n">a</span><span class="o">]</span>
</span><span class='line'> <span class="c1"># Play with the remaining characters</span>
</span><span class='line'> <span class="n">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'> <span class="k">else</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"Finish. You've done a greate job!"</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'><span class="nb">p</span> <span class="s2">"Let play with Hiragana!"</span>
</span><span class='line'><span class="n">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span></code></pre></td></tr></table></div></figure>
<p>Go to <code>Terminal</code> cd to the folder contains that file. Run <code>ruby hiragana.rb</code> and see what happen.</p>
<h1>Reading</h1>
<figure class='code'><figcaption><span>hiragana_reading.rb</span></figcaption>
<div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
<span class='line-number'>14</span>
<span class='line-number'>15</span>
<span class='line-number'>16</span>
<span class='line-number'>17</span>
<span class='line-number'>18</span>
<span class='line-number'>19</span>
<span class='line-number'>20</span>
<span class='line-number'>21</span>
<span class='line-number'>22</span>
<span class='line-number'>23</span>
<span class='line-number'>24</span>
<span class='line-number'>25</span>
<span class='line-number'>26</span>
<span class='line-number'>27</span>
<span class='line-number'>28</span>
<span class='line-number'>29</span>
<span class='line-number'>30</span>
<span class='line-number'>31</span>
<span class='line-number'>32</span>
<span class='line-number'>33</span>
<span class='line-number'>34</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="no">TIME_SLEEP</span> <span class="o">=</span> <span class="mi">3</span>
</span><span class='line'><span class="no">MAX_EXIST</span> <span class="o">=</span> <span class="mi">5</span>
</span><span class='line'><span class="n">hiragana</span> <span class="o">=</span> <span class="o">[</span><span class="s1">'あ'</span><span class="p">,</span> <span class="s1">'い'</span><span class="p">,</span> <span class="s1">'う'</span><span class="p">,</span> <span class="s1">'え'</span><span class="p">,</span> <span class="s1">'お'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'か'</span><span class="p">,</span> <span class="s1">'き'</span><span class="p">,</span> <span class="s1">'く'</span><span class="p">,</span> <span class="s1">'け'</span><span class="p">,</span> <span class="s1">'こ'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'さ'</span><span class="p">,</span> <span class="s1">'し'</span><span class="p">,</span> <span class="s1">'す'</span><span class="p">,</span> <span class="s1">'せ'</span><span class="p">,</span> <span class="s1">'そ'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'た'</span><span class="p">,</span> <span class="s1">'ち'</span><span class="p">,</span> <span class="s1">'つ'</span><span class="p">,</span> <span class="s1">'て'</span><span class="p">,</span> <span class="s1">'と'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'な'</span><span class="p">,</span> <span class="s1">'に'</span><span class="p">,</span> <span class="s1">'ぬ'</span><span class="p">,</span> <span class="s1">'ね'</span><span class="p">,</span> <span class="s1">'の'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'は'</span><span class="p">,</span> <span class="s1">'ひ'</span><span class="p">,</span> <span class="s1">'ふ'</span><span class="p">,</span> <span class="s1">'へ'</span><span class="p">,</span> <span class="s1">'ほ'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ま'</span><span class="p">,</span> <span class="s1">'み'</span><span class="p">,</span> <span class="s1">'む'</span><span class="p">,</span> <span class="s1">'め'</span><span class="p">,</span> <span class="s1">'も'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'や'</span><span class="p">,</span> <span class="s1">'ゆ'</span><span class="p">,</span> <span class="s1">'よ'</span><span class="p">,</span>
</span><span class='line'> <span class="s1">'ら'</span><span class="p">,</span> <span class="s1">'り'</span><span class="p">,</span> <span class="s1">'る'</span><span class="p">,</span> <span class="s1">'れ'</span><span class="p">,</span> <span class="s1">'ろ'</span><span class="p">,</span> <span class="s1">'わ'</span><span class="p">,</span> <span class="s1">'を'</span><span class="p">,</span> <span class="s1">'ん'</span><span class="o">]</span>
</span><span class='line'><span class="n">mark</span> <span class="o">=</span> <span class="p">{}</span>
</span><span class='line'><span class="n">hiragana</span><span class="o">.</span><span class="n">each</span> <span class="p">{</span><span class="o">|</span><span class="n">h</span><span class="o">|</span> <span class="n">mark</span><span class="o">[</span><span class="n">h</span><span class="o">]</span> <span class="o">=</span> <span class="mi">0</span><span class="p">}</span>
</span><span class='line'><span class="k">def</span> <span class="nf">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span><span class='line'> <span class="k">if</span> <span class="p">(</span><span class="n">hiragana</span><span class="o">.</span><span class="n">size</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span>
</span><span class='line'> <span class="k">while</span> <span class="kp">true</span>
</span><span class='line'> <span class="n">a</span> <span class="o">=</span> <span class="n">hiragana</span><span class="o">.</span><span class="n">sample</span>
</span><span class='line'> <span class="k">if</span> <span class="p">(</span><span class="n">mark</span><span class="o">[</span><span class="n">a</span><span class="o">]</span> <span class="o"><</span> <span class="no">MAX_EXIST</span><span class="p">)</span>
</span><span class='line'> <span class="nb">p</span> <span class="n">a</span>
</span><span class='line'> <span class="n">mark</span><span class="o">[</span><span class="n">a</span><span class="o">]</span> <span class="o">+=</span> <span class="mi">1</span>
</span><span class='line'> <span class="nb">sleep</span><span class="p">(</span><span class="no">TIME_SLEEP</span><span class="p">)</span>
</span><span class='line'> <span class="nb">puts</span> <span class="s2">"</span><span class="se">\e</span><span class="s2">[H</span><span class="se">\e</span><span class="s2">[2J"</span>
</span><span class='line'> <span class="k">else</span>
</span><span class='line'> <span class="n">hiragana</span> <span class="o">-=</span> <span class="o">[</span><span class="n">a</span><span class="o">]</span>
</span><span class='line'> <span class="c1"># Play with the remaining characters</span>
</span><span class='line'> <span class="n">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'> <span class="k">else</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"Finish. You've done a greate job!"</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'><span class="nb">p</span> <span class="s2">"Let play with Hiragana!"</span>
</span><span class='line'><span class="n">display_hiragana</span><span class="p">(</span><span class="n">hiragana</span><span class="p">,</span> <span class="n">mark</span><span class="p">)</span>
</span></code></pre></td></tr></table></div></figure>
<p>You can go to terminal to increase the font size of <code>Hiragana</code> characters.
* MacOS: Terminal –> Preferences –> Profile –> Text, at Non-ASCII Font, you choose the bigger font: maybe 24 or 30px.</p>
<p>After that, you go to <code>Terminal</code> cd to the folder contains that file. Run <code>ruby hiragana_reading.rb</code> and see what happen.</p>
<p>**Notes:
To Write <code>Hiragana</code> character, in MacOS, you have to go to <code>System Preferences</code> –> <code>Keyboard</code> –> at Tab <code>Input Sources</code>, you add <code>Japanese</code> keyboard. That’s it.
For others OS, you do someway to enable Japanese Keyboard.</p>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2014/08/10/yield-block-in-ruby/">Yield and Block in Ruby</a></h1>
<p class="meta">
<time datetime="2014-08-10T11:02:12+07:00" pubdate data-updated="true">Aug 10<sup>th</sup>, 2014</time>
</p>
</header>
<div class="entry-content"><p>Hi all, in this post, i will research something with <code>yield</code> and <code>block</code> in ruby</p>
<h1>Yield</h1>
<h3>Basic</h3>
<figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="k">def</span> <span class="nf">test</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"test"</span>
</span><span class='line'> <span class="k">yield</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'><span class="nb">test</span> <span class="p">{</span> <span class="nb">p</span> <span class="s2">"yield"</span> <span class="p">}</span>
</span><span class='line'><span class="c1"># => test</span>
</span><span class='line'><span class="c1"># => yield</span>
</span></code></pre></td></tr></table></div></figure>
<h3>With variable</h3>
<figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="k">def</span> <span class="nf">test</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"test"</span>
</span><span class='line'> <span class="n">x</span> <span class="o">=</span> <span class="mi">2</span>
</span><span class='line'> <span class="k">yield</span> <span class="n">x</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'><span class="nb">test</span> <span class="p">{</span> <span class="o">|</span><span class="n">x</span><span class="o">|</span> <span class="nb">p</span> <span class="s2">"yield </span><span class="si">#{</span><span class="n">x</span><span class="si">}</span><span class="s2">"</span> <span class="p">}</span>
</span><span class='line'>
</span><span class='line'><span class="c1"># => test</span>
</span><span class='line'><span class="c1"># => yield 2</span>
</span></code></pre></td></tr></table></div></figure>
<h1>Block</h1>
<h3>Basic</h3>
<figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="k">def</span> <span class="nf">test</span><span class="p">(</span><span class="o">&</span><span class="n">code</span><span class="p">)</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"test"</span>
</span><span class='line'> <span class="n">code</span><span class="o">.</span><span class="n">call</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'>
</span><span class='line'><span class="nb">test</span> <span class="p">{</span> <span class="nb">p</span> <span class="s2">"block call"</span><span class="p">}</span>
</span><span class='line'><span class="c1"># => test</span>
</span><span class='line'><span class="c1"># => block call</span>
</span></code></pre></td></tr></table></div></figure>
<h3>With variable</h3>
<figure class='code'><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="k">def</span> <span class="nf">test</span><span class="p">(</span><span class="o">&</span><span class="n">code</span><span class="p">)</span>
</span><span class='line'> <span class="nb">p</span> <span class="s2">"test"</span>
</span><span class='line'> <span class="n">n</span> <span class="o">=</span> <span class="mi">2</span>
</span><span class='line'> <span class="n">code</span><span class="o">.</span><span class="n">call</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span>
</span><span class='line'><span class="k">end</span>
</span><span class='line'><span class="nb">test</span> <span class="p">{</span> <span class="o">|</span><span class="n">n</span><span class="o">|</span> <span class="nb">p</span> <span class="s2">"block call </span><span class="si">#{</span><span class="n">n</span><span class="si">}</span><span class="s2">"</span> <span class="p">}</span>
</span><span class='line'>
</span><span class='line'><span class="c1"># => test</span>
</span><span class='line'><span class="c1"># => block call 2</span>
</span></code></pre></td></tr></table></div></figure>
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