Seven JSON mistakes and how to fix each one
JSON looks like JavaScript, but its rules are stricter. Most parse errors come from the same handful of slips.
Code
Design
Colour contrast: choosing text colours people can read
Low contrast is one of the most common accessibility failures on the web. The test is a single ratio, and fixing a colour usually takes one step.
Measuring
Metric and imperial: the conversions worth knowing
Exact definitions, quick mental shortcuts, and the same-name units that are different sizes in the US and UK.
Money
What a loan really costs: the formula behind the monthly payment
A quote leads with the monthly payment. The interest total, the early-years split and the term you choose matter just as much.
Security
Why a long password beats a clever one
Swapping an a for an @ fools nobody. Length and true randomness are what slow an attacker down, and the maths is easy to check.