Tutorials, deep-dives, and privacy-first thinking about developer tools.
Showing 61–72 of 111 posts
The real average reading speed is about 238 words per minute, not 300. Here are the 2026 numbers, how to turn word count into reading time, and whether speed reading works.
Learn how to compare two JSON files without key-order and whitespace noise. Normalize first, sort keys with jq, and diff only the changes that matter.
Five regex mistakes that make a pattern match too much — greedy .*, unescaped dots, missing anchors, loose alternation, nested quantifiers — with the fix for each.
The LCS algorithm is how a diff tool finds the fewest insertions and deletions between two texts. Here is how longest common subsequence actually works.
A practical guide to regex find and replace in VS Code: capture groups, $1 substitution, case modifiers, and the side-by-side diff preview.
Ignore whitespace in a diff and you cut formatting noise — but the same flag can hide real bugs in Python, YAML, and Makefiles. Here's when to use it.
Side-by-side and unified diff show the same edits two ways. Learn how each format reads, what the @@ hunk header means, and when to pick which.
Understand regex capture groups, backreferences, and the $1, $&, and $<name> replacement tokens — with copy-paste JavaScript examples that actually work.
A browser image converter often beats Photoshop's Save As for plain format changes, batch jobs, and privacy. Here is exactly when each one wins in 2026.
Regex lookahead vs lookbehind, explained with five production patterns: password rules, thousands separators, price parsing, and camelCase splits.
A pattern that works in PCRE can silently break in JavaScript or Python re. Here are the regex flavor differences that explain why, with fixes for each.
How to match a URL with regex and survive the three edge cases that break most patterns: trailing punctuation, balanced parentheses, and scheme-less links.