oliverdavies.uk/content/node.19a48fd0-5e10-496b-b08c-1ed47ad6b2a9.yml

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title:
  - value: 'Types add context'
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      <p>In yesterday's email, I wrote about why <a href="/daily/2024/08/16/what-are-err--req-and-res">readable variable names are important</a> and why I use descriptive variable names in my code.</p>

      <p>Given this pseudo-code:</p>

      <pre><code class="php">function hande(req, res) {
      }
      </code></pre>

      <p>With the short variable names, whilst you can guess, it's unclear what the variable names are.</p>

      <p>However, in this code, we have the same variable names, but we also have additional type information:</p>

      <pre><code class="php">function handle(Request req, Response res): void {
      }
      </code></pre>

      <p>Even with the same variable names, I know what their types are and what the function returns, I have better completions and diagnostics in my editor and better static analysis of my code, making it easier to identify and fix potential bugs.</p>

              
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    processed: |
      <p>In yesterday's email, I wrote about why <a href="/daily/2024/08/16/what-are-err--req-and-res">readable variable names are important</a> and why I use descriptive variable names in my code.</p>

      <p>Given this pseudo-code:</p>

      <pre><code class="php">function hande(req, res) {
      }
      </code></pre>

      <p>With the short variable names, whilst you can guess, it's unclear what the variable names are.</p>

      <p>However, in this code, we have the same variable names, but we also have additional type information:</p>

      <pre><code class="php">function handle(Request req, Response res): void {
      }
      </code></pre>

      <p>Even with the same variable names, I know what their types are and what the function returns, I have better completions and diagnostics in my editor and better static analysis of my code, making it easier to identify and fix potential bugs.</p>

              
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