oliverdavies.uk/content/node.ea06edab-74a5-42d4-add9-d4dce3d0f792.json

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    "title": [
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            "value": "You need tests to refactor safely"
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            "value": "\n          <p><a href=\"\/daily\/2024\/08\/31\/make-it-work-then-make-it-good\">Once you have working code<\/a>, you can refactor it to make it better.<\/p>\n\n<p>You can rename variables, extract new functions or classes, ensure the code is styled and formatted correctly - anything to make the code easier to read, understand or maintain.<\/p>\n\n<p>But, the key thing is the code still needs to work.<\/p>\n\n<p>You don't want to break working code and introduce a regression, even if it is messy or difficult to read.<\/p>\n\n<p>The best way I know to approach this is by having automated tests covering this code, and ensure they are working and passing before starting to refactor.<\/p>\n\n<p>Then you can run the tests again and ensure they still pass.<\/p>\n\n<p>If they pass, the code still works and the refactoring was successful.<\/p>\n\n<p>If not, the code is broken and you need to revert the changes and start again.<\/p>\n\n        ",
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            "processed": "\n          <p><a href=\"http:\/\/default\/daily\/2024\/08\/31\/make-it-work-then-make-it-good\">Once you have working code<\/a>, you can refactor it to make it better.<\/p>\n\n<p>You can rename variables, extract new functions or classes, ensure the code is styled and formatted correctly - anything to make the code easier to read, understand or maintain.<\/p>\n\n<p>But, the key thing is the code still needs to work.<\/p>\n\n<p>You don't want to break working code and introduce a regression, even if it is messy or difficult to read.<\/p>\n\n<p>The best way I know to approach this is by having automated tests covering this code, and ensure they are working and passing before starting to refactor.<\/p>\n\n<p>Then you can run the tests again and ensure they still pass.<\/p>\n\n<p>If they pass, the code still works and the refactoring was successful.<\/p>\n\n<p>If not, the code is broken and you need to revert the changes and start again.<\/p>\n\n        ",
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