If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own and using them in your programs can provide significant performance ...

前回は変数とデータ型を扱いました。letとconstの使い分け、===を使うべき理由、型変換の罠など、Python使いが引っかかりやすいポイントを押さえましたね。 今回は条件分岐とループです。構文の見た目はPythonと結構違いますが、やっていることは同じです。

In the following example, we loop through a list of numbers, and use the variable digit to hold each number in turn: Strings in Python are considered “sequences” — they can be iterated over, and the ...