Data Processing

Apply default values to an object using lodash _.defaults

Math & Numbers

Calculate discounted prices, savings, and final price after applying percentage or fixed amount discounts

Validation

Validate US Employer Identification Numbers

Data Processing

Remove values from array that are present in other arrays using lodash _.difference

Data Processing

Drop first N items from array using lodash _.drop

Data Processing

Drop last N items from array using lodash _.dropRight

Data Processing

Drop items from array while predicate is true using lodash _.dropWhile

Development

Extract and parse documentation from JavaScript/TypeScript, Python, and Java source code

Data Processing

Extract and validate .env style KEY=VALUE configurations with detection of duplicate keys and suspicious spaces/quotes

Geography

Calculate distance and direction between cities around the world

Text Processing

Remove all empty lines from text (lines with no content)

Text Processing

Extract all Unicode emoji from text, or optionally remove emojis