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Varuna Jayasiri ef7268e89c si
2023-02-27 14:18:36 +05:30

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<title>අතරමැදි සක්රීය කිරීම් සඳහා හැඹිලිය</title>
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<h1>අතරමැදිසක්රීය කිරීම් සඳහා හැඹිලිය</h1>
<p>අනුමානයඅතරතුර ආදර්ශ ටෝකනය මඟින් ටෝකනය ප්රතිදානය කරයි. යතුරේ සහ වටිනාකමේ අවධානය ස්ථර ගබඩා කිරීම සඳහා අපි මෙම සරල හැඹිලිය භාවිතා කරමු, එවිට පෙර ටෝකන සඳහා ඒවා නැවත ගණනය කිරීමට අපට අවශ්ය නොවේ. </p>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">15</span><span></span><span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">Any</span></pre></div>
</div>
</div>
<div class='section' id='section-1'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-1'>#</a>
</div>
<h2>හැඹිලිය</h2>
<p>මෙයප්රධාන වටිනාකමක් සහිත හැඹිලියක් පවත්වා ගෙන යන අතර පෝලිම් අගයන් තල්ලු කර ඒවා එකම අනුපිළිවෙලකට පොප් කරයි. අපට බහු අවධානය ස්ථර ඇති බැවින් පෝලිම් ප්රයෝජනවත් වේ. </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">18</span><span class="k">class</span> <span class="nc">Cache</span><span class="p">:</span></pre></div>
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<div class='docs'>
<div class='section-link'>
<a href='#section-2'>#</a>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">26</span> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="lineno">27</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span> <span class="o">=</span> <span class="p">{}</span></pre></div>
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<div class='section' id='section-3'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-3'>#</a>
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<h3>හැඹිලියඉවත් කරන්න</h3>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">29</span> <span class="k">def</span> <span class="nf">clear_all</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-4'>
<div class='docs'>
<div class='section-link'>
<a href='#section-4'>#</a>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">33</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span> <span class="o">=</span> <span class="p">{}</span></pre></div>
</div>
</div>
<div class='section' id='section-5'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-5'>#</a>
</div>
<h3>පෝලිමකටවටිනාකමක් තල්ලු කරන්න</h3>
<ul><li><code class="highlight"><span></span><span class="n">name</span></code>
පෝලිමේ නම </li>
<li><code class="highlight"><span></span><span class="n">value</span></code>
තල්ලු කළ යුතු වටිනාකම වේ</li></ul>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">35</span> <span class="k">def</span> <span class="nf">push</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">Any</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-6'>
<div class='docs'>
<div class='section-link'>
<a href='#section-6'>#</a>
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<p>එයනොමැති නම් හිස් පෝලිමක් සාදන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">44</span> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">:</span>
<span class="lineno">45</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span></pre></div>
</div>
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<div class='docs'>
<div class='section-link'>
<a href='#section-7'>#</a>
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<p>පෝලිමටතල්ලු කරන්න </p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">48</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">value</span><span class="p">)</span></pre></div>
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<div class='docs doc-strings'>
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<a href='#section-8'>#</a>
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<h3>පෝලිමේප්රමාණය ආපසු දෙන්න</h3>
<ul><li><code class="highlight"><span></span><span class="n">name</span></code>
පෝලිමේ නම </li>
</ul><p>පෝලිමේ<em>ප්රතිලාභ</em> ප්රමාණය වෙනත් කිසිවක් තිබේ නම් නැත</p>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">50</span> <span class="k">def</span> <span class="nf">q_size</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-9'>
<div class='docs'>
<div class='section-link'>
<a href='#section-9'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">58</span> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">:</span>
<span class="lineno">59</span> <span class="k">return</span> <span class="kc">None</span>
<span class="lineno">60</span>
<span class="lineno">61</span> <span class="k">if</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">name</span><span class="p">])</span> <span class="o">!=</span> <span class="nb">list</span><span class="p">:</span>
<span class="lineno">62</span> <span class="k">return</span> <span class="kc">None</span>
<span class="lineno">63</span>
<span class="lineno">64</span> <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">name</span><span class="p">])</span></pre></div>
</div>
</div>
<div class='section' id='section-10'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-10'>#</a>
</div>
<h3>පෝලිමේසිට පොප්</h3>
<ul><li><code class="highlight"><span></span><span class="n">name</span></code>
පෝලිමේ නම </li>
<p>වටිනාකම<em>නැවත ලබා දෙයි</em> </p></ul>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">66</span> <span class="k">def</span> <span class="nf">pop</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">:</span> <span class="nb">str</span><span class="p">):</span></pre></div>
</div>
</div>
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<div class='docs'>
<div class='section-link'>
<a href='#section-11'>#</a>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">73</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span></pre></div>
</div>
</div>
<div class='section' id='section-12'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-12'>#</a>
</div>
<h3>වටිනාකමක්හැඹිලිය</h3>
<ul><li><code class="highlight"><span></span><span class="n">key</span></code>
හැඹිලි කළ යුතු වටිනාකමේ නමයි </li>
<li><code class="highlight"><span></span><span class="n">value</span></code>
වටිනාකම වේ</li></ul>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">75</span> <span class="k">def</span> <span class="nf">set</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">value</span><span class="p">:</span> <span class="n">Any</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-13'>
<div class='docs'>
<div class='section-link'>
<a href='#section-13'>#</a>
</div>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">82</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">value</span></pre></div>
</div>
</div>
<div class='section' id='section-14'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-14'>#</a>
</div>
<h3>හැඹිලිවලින්වටිනාකමක් ලබා ගන්න</h3>
<ul><li><code class="highlight"><span></span><span class="n">key</span></code>
හැඹිලි කිරීමේදී භාවිතා කරන නමයි </li>
<li><code class="highlight"><span></span><span class="n">default</span></code>
හැඹිලිය හිස් නම් පෙරනිමි අගය වේ </li>
<p>හැඹිලිඅගය<em>නැවත ලබා දෙයි</em> </p></ul>
</div>
<div class='code'>
<div class="highlight"><pre><span class="lineno">84</span> <span class="k">def</span> <span class="nf">get</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">,</span> <span class="n">default</span><span class="p">:</span> <span class="n">Any</span> <span class="o">=</span> <span class="kc">None</span><span class="p">):</span></pre></div>
</div>
</div>
<div class='section' id='section-15'>
<div class='docs'>
<div class='section-link'>
<a href='#section-15'>#</a>
</div>
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<div class='code'>
<div class="highlight"><pre><span class="lineno">92</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">default</span><span class="p">)</span></pre></div>
</div>
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<div class='section' id='section-16'>
<div class='docs doc-strings'>
<div class='section-link'>
<a href='#section-16'>#</a>
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<h3>හැඹිලිඅගය ඉවත් කරන්න</h3>
<ul><li><code class="highlight"><span></span><span class="n">key</span></code>
හැඹිලි කිරීමේදී භාවිතා කරන නමයි</li></ul>
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<div class="highlight"><pre><span class="lineno">94</span> <span class="k">def</span> <span class="nf">clear</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">key</span><span class="p">:</span> <span class="nb">str</span><span class="p">):</span></pre></div>
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<div class="highlight"><pre><span class="lineno">100</span> <span class="k">del</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cache</span><span class="p">[</span><span class="n">key</span><span class="p">]</span></pre></div>
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<p>හැඹිලිසඳහා සිංගල්ටන් </p>
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<div class="highlight"><pre><span class="lineno">104</span><span class="n">_INSTANCE</span> <span class="o">=</span> <span class="kc">None</span></pre></div>
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<h3>හැඹිලිඋදාහරණයක් ලබා ගන්න</h3>
<ul><p>හැඹිලිඅවස්ථාව<em>ආපසු ලබා දෙයි</em> </p></ul>
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<div class="highlight"><pre><span class="lineno">107</span><span class="k">def</span> <span class="nf">get_cache</span><span class="p">()</span> <span class="o">-&gt;</span> <span class="n">Cache</span><span class="p">:</span></pre></div>
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<div class="highlight"><pre><span class="lineno">113</span> <span class="k">global</span> <span class="n">_INSTANCE</span>
<span class="lineno">114</span>
<span class="lineno">115</span> <span class="k">if</span> <span class="n">_INSTANCE</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="lineno">116</span> <span class="n">_INSTANCE</span> <span class="o">=</span> <span class="n">Cache</span><span class="p">()</span>
<span class="lineno">117</span>
<span class="lineno">118</span> <span class="k">return</span> <span class="n">_INSTANCE</span></pre></div>
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