Hi, i suddenly come up with this
Array.prototype.reduce();
In the following program, if we pass an array "inputWords", of stings.
it will return an object with keys as words (unique), and values as "no of
times occurred"
function countWords(inputWords) {
return inputWords.reduce(function(countMap, word) {
countMap[word] = ++countMap[word] || 1 // increment or initialize to 1
return countMap
}, {}) // second argument to reduce initialises countMap to {}
}
module.exports = countWords
I would like to know the implementation of* .reduce()*
*Anyone , please suggest me , how to find the source code of this/ or
implement an one such *
I appreciate your help , on spending your valuable time on this funny
question. Since i am a beginner , i don't know how to go and see the source
code of the module.
But i come to know v8 is open source, hence there might be a way..
Thanks for your help in advance .
Thanks and regards,
Bala
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