Code Explainers

Code explainers tagged #default-parameters

javascript 
function collapseConsecutiveLogs(lines, { keyFn = (l) => l.message } = {}) {
  const groups = [];
 
  for (const line of lines) {

Collapsing consecutive log lines in JavaScript

grouping run-length-encoding data-transformation
Intermediate 7 steps
typescript 
export interface FormatBytesOptions {
  decimals?: number;
  binary?: boolean;
}

Formatting byte counts into human-readable sizes

formatting logarithms default-parameters
Intermediate 8 steps
javascript 
const UNITS = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB'];
 
export function formatBytes(bytes, { decimals = 1, binary = false } = {}) {
  if (!Number.isFinite(bytes)) {

Formatting byte counts into human units

logarithms formatting default-parameters
Intermediate 8 steps