hauptsächlich obj vs json bis u mit aufgabe 4 #10
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ideadapt
reviewed
May 19, 2022
| console.log(sum(zahlen)) | ||
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| // Imperativ | ||
| let summe = zahlen.reduce((sum, val) =>sum + val) |
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mit imperativ ist gemeint: keine funktionalen konzepte verwenden. sprich: mit for schleife arbeiten.
ideadapt
reviewed
May 19, 2022
| // das Array sortieren (mit check ob sortBy im obj existiert) | ||
| if(sortBy !== null) { | ||
| arr.sort((a, b) => { | ||
| if (sortBy in a && sortBy in b) { |
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Hinweis: der in Operator berücksichtigt nicht ob das "sortBy" property enumerable ist oder nicht. Schöner wäre es hier Object.keys(a).includes(sortBy) zu verwenden.
ideadapt
reviewed
May 19, 2022
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aufgabe 4 in einigen zügen schon auf dem weg zur aufgabe 5