Regex Quantifiers: Greedy vs Lazy Matching
By qc_admin
Regex quantifiers *, +, ?, and {n,m} are greedy by default. Learn how adding ? makes them lazy, how backtracking works, with worked examples.
Category: Formats & Standards
JSON Explained: Syntax, Common Errors, and How to Fix Them
By qc_admin
A clear guide to JSON syntax and data types, plus the parse errors that trip everyone up and exactly how to fix each one.
JSON vs YAML vs TOML: When to Use Which
By qc_admin
An honest comparison of JSON, YAML, and TOML: syntax, readability, gotchas, and which format fits APIs versus config files.
Cron Syntax Explained, Field by Field
By qc_admin
A field-by-field guide to cron syntax: the five time fields, stars, ranges, steps, lists, and the day-of-month/day-of-week gotcha.
Base64: What It Does and What It Isn’t
By qc_admin
Base64 turns binary into safe ASCII text for transport, adds about 33% size, and is not encryption or compression. Here is what it really does.