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VLAZ

VLAZ has asked 2 questions and find answers to 60 problems.

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About

How to help Ukraine


Pet peeves:

  • Images posted instead of text.
  • Using .map() (or any other array iteration method like .filter, etc), in JavaScript for simply going through the array instead of .forEach() or a loop`. In general, use the array methods for their purpose:
    • .map - I have an array, I need another array where each item is based on the first one
    • .flatMap - like .map but I use it when each new item also an array
    • .filter - I have an array, I need less of it
    • .find - I have an array, I need one item from it
    • .findIndex - I have an array, I need the index of an item
    • .some - I have an array, I need to check if at least one item passes a check
    • .every - I have an array, I need to see if all items pass a check
    • .forEach - I have an array, I need to do something with each item. Usually I don't want to return anything
    • .reduce/.reduceRight - I have an array, I need to make it into "one value". I'll have to check if I really need to use reduce for this
    • for, for..in, for..of, while, do..while loops if the problem can't (or doesn't need to) fit into one of the above
  • Using regular expressions when you need "something with text" instead of parsing, simple string manipulation, or basic arithmetic, and so on.
  • Generating DOM content as a string of HTML.
  • "Quotes that are not quotes".
  • Unformatted code.