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        <title>Lucky777</title>
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        <lastBuildDate>Wed, 20 May 2026 02:45:04 GMT</lastBuildDate>
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            <title><![CDATA[收藏一些常用的solidity小机制]]></title>
            <link>https://paragraph.com/@layflat/solidity</link>
            <guid>NQaTwcAQ7KRw1yptVptm</guid>
            <pubDate>Fri, 06 May 2022 04:48:53 GMT</pubDate>
            <description><![CDATA[if(balanceOf(uniswapV2Pair) == 0 &#x26;&#x26; to == uniswapV2Pair){ startNumber = block.number; } 这个用来判定加入初始流动性的时间，即上线时间]]></description>
            <content:encoded><![CDATA[<pre data-type="codeBlock" text="        if(balanceOf(uniswapV2Pair) == 0 &amp;&amp; to == uniswapV2Pair){
            startNumber = block.number;
        }
这个用来判定加入初始流动性的时间，即上线时间
"><code>        <span class="hljs-keyword">if</span>(balanceOf(uniswapV2Pair) <span class="hljs-operator">=</span><span class="hljs-operator">=</span> <span class="hljs-number">0</span> <span class="hljs-operator">&#x26;</span><span class="hljs-operator">&#x26;</span> to <span class="hljs-operator">=</span><span class="hljs-operator">=</span> uniswapV2Pair){
            startNumber <span class="hljs-operator">=</span> <span class="hljs-built_in">block</span>.<span class="hljs-built_in">number</span>;
        }
这个用来判定加入初始流动性的时间，即上线时间
</code></pre>]]></content:encoded>
            <author>layflat@newsletter.paragraph.com (Lucky777)</author>
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        <item>
            <title><![CDATA[我有一头小毛驴]]></title>
            <link>https://paragraph.com/@layflat/EBIzr6hAeNoHW6WanIZ4</link>
            <guid>EBIzr6hAeNoHW6WanIZ4</guid>
            <pubDate>Fri, 06 May 2022 02:34:09 GMT</pubDate>
            <description><![CDATA[我有一头小毛驴，我从来也不骑 有一天我心血来潮，骑它去赶集]]></description>
            <content:encoded><![CDATA[<p>我有一头小毛驴，我从来也不骑</p><p>有一天我心血来潮，骑它去赶集</p>]]></content:encoded>
            <author>layflat@newsletter.paragraph.com (Lucky777)</author>
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