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Joined 1 year ago
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Cake day: July 1st, 2023

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  • Easy access to small snippets of code you often need, but putting them in their own library would be crazy.

    • Opening a file / db connection
    • parsing xml/json/… ,
    • template for unit tests,
    • import and initialization of framework at work.

    Depending on the IDE snippets can also move parts of the code around: (intellij live templates)

    • variable.notnull -> if (variable != null) {… }
    • “text %s”.format -> String.format(“text %s”,…)



  • The variable is set once, but the if expression is still evaluated every time (unless the compiler can optimize it)

    (edit after skimming the article: yes,using the variable would solve the problem of the last example)

    So there would be the branching overhead in every iteration. But that’s something the cpu branch prediction should cover, especially since the taken branch will be identical in every loop.

    Same also applied to the implied condition to break the for loop (only the first few and last iteration should be wrong predictions)