oliverdavies.uk/content/node.4a1294d7-248e-48f8-bfae-b49bbe1d19b4.json

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    "title": [
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            "value": "Comments can lie. Code can't."
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            "value": "\n          <p>How often have you need code like this?<\/p>\n\n<pre><code class=\"php\">\/\/ Returns true.\nreturn false;\n<\/code><\/pre>\n\n<p>Whilst a comment like this could have been true when it was written, the code can change independently of the comment - making them out of sync and the comment no longer true.<\/p>\n\n<p>As the comment is not evaluated or executed, there isn't a way to validate whether it's still correct, so whilst it could be, it may not be.<\/p>\n\n<p>Comments should describe why the code is needed, not what it does.<\/p>\n\n<p>If a comment describes the functionality, it can be refactored and extracted to a class, method or function - a.k.a. self-documenting code.<\/p>\n\n<p>But, if you want something that will alert you if the functionality changes, look into <a href=\"/atdc\">automated testing<\/a>.<\/p>\n\n<p>If you have a passing test that suddenly starts to fail, you know the behaviour has changed.<\/p>\n\n        ",
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            "processed": "\n          <p>How often have you need code like this?<\/p>\n\n<pre><code class=\"php\">\/\/ Returns true.\nreturn false;\n<\/code><\/pre>\n\n<p>Whilst a comment like this could have been true when it was written, the code can change independently of the comment - making them out of sync and the comment no longer true.<\/p>\n\n<p>As the comment is not evaluated or executed, there isn't a way to validate whether it's still correct, so whilst it could be, it may not be.<\/p>\n\n<p>Comments should describe why the code is needed, not what it does.<\/p>\n\n<p>If a comment describes the functionality, it can be refactored and extracted to a class, method or function - a.k.a. self-documenting code.<\/p>\n\n<p>But, if you want something that will alert you if the functionality changes, look into <a href=\"/atdc\">automated testing<\/a>.<\/p>\n\n<p>If you have a passing test that suddenly starts to fail, you know the behaviour has changed.<\/p>\n\n        ",
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