Birdwatch Note Rating
2023-09-29 12:19:42 UTC - HELPFUL
Rated by Participant: BB92AC0106AB9F928CA41A46EA04237C0E075588CD46BBF6B19E56DE9418B3D2
Participant Details
Original Note:
In JavaScript, the 'x in y' operator is used to check if an object contains a key. '4 in [0,1,2,3,4]' is false because, like most languages, in JS arrays start from 0. Checking that an array contains a value can be done with 'y.includes(x)'. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/in
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