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Is there an easy way to create an array of empty strings in javascript? Currently the only way I can think to do it is with a loop:
var empty = new Array(someLength); for(var i=0;i<empty.length;i++){ empty[i] = ''; } but I'm wondering if there is some way to do this in one line using either regular javascript or coffeescript.
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You can initialize an empty string array as const arr: string[] = [] . The array can contain zero or more elements of type string .
However, there's one nice thing about arrays - their size can't change, so you can always use the same empty array reference. So in your code, you can use: private static final String[] EMPTY_ARRAY = new String[0];
1) Assigning it to a new empty array This is the fastest way to empty an array: a = []; This code assigned the array a to a new empty array. It works perfectly if you do not have any references to the original array.
Python numpy empty string array To create an empty array of strings we can easily use the function np. empty(). To create an empty array of 4 strings (with size 3), we need to pass 'S3' as a dtype argument in the np. empty() function.
Update: on newer browsers - use .fill: Array(1000).fill('') will create an array of 1000 empty strings.
Yes, there is a way:
var n = 1000; Array(n).join(".").split("."); // now contains n empty strings. I'd probably use the loop though, it conveys intent clearer.
function repeat(num,whatTo){ var arr = []; for(var i=0;i<num;i++){ arr.push(whatTo); } return arr; } That way, it's perfectly clear what's being done and you can reuse it.
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You can get an array defining the size and fill it with some tokens:
const arr = Array(size).fill(""); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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