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117 lines
4.6 KiB
117 lines
4.6 KiB
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<a href="https://blog.juliobiason.me"><h1>Julio Biason .Me 4.3</h1></a> |
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<p class="lead">Old school dev living in a 2.0 dev world</p> |
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<h1 class="post-title">Things I Learnt The Hard Way - Design Patters Are Used to Name Solution, Not Find Them</h1> |
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<span class="post-date"> |
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2019-06-25 |
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<a href="https://blog.juliobiason.me/tags/books/">#books</a> |
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<a href="https://blog.juliobiason.me/tags/things-i-learnt/">#things i learnt</a> |
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<a href="https://blog.juliobiason.me/tags/design-patterns/">#design patterns</a> |
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<p>Most of the times I saw design patterns being applied, they were applied as a |
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way to find a solution, so you end up twisting a solution -- and, sometimes, |
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the problem it self -- to fit the pattern.</p> |
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<span id="continue-reading"></span> |
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<p>My guess is that the heavy use of "let's apply <em>this</em> design pattern" before |
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even understanding the problem -- or even trying to solve it -- comes as a |
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form of <a href="/books/things-i-learnt/cargo-cult">cargo cult</a>: "We saw that people |
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used this pattern and solved their problem, so let's use it too and it will |
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solve our problem". Or, worse: "Design pattern is described by <em>Famous |
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Person</em>, so we must use it".</p> |
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<p>Here is the thing: Design pattern should <em>not</em> be used as a way to find |
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solution to any problems. You may use some of them as base for your solution, |
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but you must focus on the <em>problem</em>, not the <em>pattern</em>. </p> |
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<p>"Do a visitor pattern will solve this?" is the wrong question. "What should we |
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do to solve our problem?" is the real question. Once you went there and solved |
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the problem you may look back and see if it is a visitor pattern -- or whatever |
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pattern. If it doesn't, that's alright, 'cause you <em>solved the problem</em>. If it |
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did... well, congratulations, you now know how to name your solution.</p> |
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<p>I've seen this happening a lot: People have a problem; people decided to use a |
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pattern; the pattern doesn't actually solve the problem (not in the 100% mark, |
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but above 50%); what happens then is that people start twisting the problem to |
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fit the pattern or, worse, add new layers to transform the problem into the |
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pattern.</p> |
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<< <a href="/books/things-i-learnt/gherkin">Gherkin Is Your Friend to Understand Expectations</a> |
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<div style="float:right"> |
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<a href="/books/things-i-learnt/data-flow">Thinking Data Flow Beats Patterns</a> >> |
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