Python 3.6:
[f"Cat #{n}" for n in range(5)]
gives
['Cat #0', 'Cat #1', 'Cat #2', 'Cat #3', 'Cat #4']
New to JavaScript, What's the equivalent in new EcmaScript?
What's the equivalent of a list comprehension like this one in ES2016 or greater?
Viewed 4868
4 Answers
console.log( [...Array(5)].map((v, i) => `Cat #${i}`) )If it has to work in IE too :
console.log( Array.apply(0, Array(5)).map(function(v, i) { return 'Cat #' + i; }) )Use the combination of Generator and Spread Operator.
ES2015:
[...(function*(){for(let n=0;n<5;)yield'Cat #'+n++})()]
gives
["Cat #0", "Cat #1", "Cat #2", "Cat #3", "Cat #4"]
Related