Oh wow j'avoue elle est géniale

Any mathematical comparison* returns false

And why NaN === NaN returns false ? Because the very nature of this value makes it that any mathematical operation with NaN returns false, and that includes comparisons. Kinda weird but not that weird when you think about it?

Take the expression "two" * 8. The * operator (unlike +) is specifically used in mathematical operations so the language tries to return a number. But the operation is incorrect as "two" is a string. So the result is a number value that tells you something went wrong

NaN is a value in the number type but specifically used to describe the result of an incorrect mathematical operation

Super merci :)

Bonjour j'aimerais m'inscrire à votre newsletter mais le lien sur votre site renvoie sur substack, est-ce vous avez un nouveau lien sous la main ?

Trop bien ! C'est mérité l'appli est super ✨

Mais Senshi-elfe ne mange que de la brioche 💁‍♀️✨