7 Hard-Learned Lessons That Shape Better Software Developers

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A software developer has shared seven key lessons drawn from personal experience that go beyond writing code. These include understanding requirements before coding, reading error messages carefully, and writing descriptive, readable code. The developer also stresses the importance of mastering fundamentals like HTML, CSS, JavaScript, Git, and data structures before chasing new frameworks. Building real projects, rather than relying solely on tutorials, is highlighted as where genuine learning takes place. The overarching message is that growth in software development comes from continuous learning, embracing mistakes, and staying curious.

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When developers encounter a SyntaxError from JSON.parse() or res.json(), the root cause is often not a malformed JSON file but a flawed HTTP request returning HTML instead of JSON. Common triggers include wrong URLs, missing authentication, or expired tokens, which cause the response to begin with HTML markup rather than valid JSON. In cases where the JSON itself is genuinely malformed, typical culprits are trailing commas, single quotes, unquoted keys, comments, or Python-style values like True and None. Double-parsing a fetch response is another frequent mistake, since res.json() already handles parsing and calling JSON.parse() on top of it breaks the flow. Developers can diagnose and fix these issues using online validators to locate the exact error line and repair tools that convert lenient syntax to strict JSON.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

Why In-App Customer Support Flows Are the Most Under-Tested Feature in Delivery Apps

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