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cdlvr
14,448 PointsWhy use Array.filter() instead of Array.find() to return a single, unused Token?
The solution has us create a get unusedTokens() method that filters the list of tokens down to only the unused tokens:
get unusedTokens() {
return this.tokens.filter(token => !token.dropped);
}
Then grabs the first token from the unused token to use as the active token:
get activeToken() {
return this.unusedTokens[0];
}
Is there a reason for doing this rather than using Array.find() to grab an unused token in a single step? i.e.:
get activeToken() {
return this.tokens.find(token => !token.dropped);
}
1 Answer
Steven Parker
231,275 PointsOne reason to implement them separately might be if there was another use for the unused tokens list elsewhere in the code (or if one was anticipated in the future). But it might also just be that "find" had not been introduced in the course.