Concat Uint8Array

concat-uint8array.md

Searching on the Internet to find a proper way to concat multiple arrays of Uint8Array but the result made me disapointed. "Why you guys so fucking lazy?", I asked.

So, I wrote mine so you can steal it genterly under the witness of MIT License. If you are end up here you are fucking lazy, you should do something about your life. Btw, don't just steal it leave me a damn star, Jesus!!.

TypeScript

function concatUint8Array(input: Uint8Array[], size?: number): Uint8Array {
  let concatedSize = 0;
  if (typeof size === 'undefined') {
    for (let i = 0; i < input.length; i += 1) {
      concatedSize += input[i].length;
    }
  } else {
    concatedSize = size;
  }
  const newArray = new Uint8Array(concatedSize);
  let pointer = 0;
  for (let i = 0; i < input.length; i += 1) {
    newArray.set(input[i], pointer);
    pointer += input[i].length;
  }
  return newArray;
}

JavaScript

function concatUint8Array(input, size) {
    let concatedSize = 0;
    if (typeof size === 'undefined') {
        for (let i = 0; i < input.length; i += 1) {
            concatedSize += input[i].length;
        }
    }
    else {
        concatedSize = size;
    }
    const newArray = new Uint8Array(concatedSize);
    let pointer = 0;
    for (let i = 0; i < input.length; i += 1) {
        newArray.set(input[i], pointer);
        pointer += input[i].length;
    }
    return newArray;
}