How to use QuickSort algorithm to find a median value.
The Smartest Algorithm No One Uses
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Daily Archives: 2026-09-18 [Friday]
PHP URL
Today while reading My temporary PHP fix from 2014 has nearly 20M installs. Today I’m deprecating it. I learned about PHP 8.5’s New URI Extension: A Game-Changer for URL Parsing.
9 Firmware Shortcuts You Should Never Ship in a Product
More wisdom from John Teel.
Less-Common Features of Multimeters
Some interesting features.
His old Fluke 187 meter has a “nS” mode (nano-siemens) which can give crazy high resistance measurements (up to 100 GΩ) as conductance measurements.
His Fluke 87V has a low pass filter on its AC voltage input.
He explains Lo-Z mode and phantom voltage. It works by putting a thermistor across the input leads.
His old Tekpower TP8250 analog meter has a D.Ω range for measuring low resistances and a NULL mode for indicating voltage direction. His Sanwa EM7000 also has a NULL mode facility.
His Tekpower TP8250 also has a battery mode, which will measure the voltage from a battery with a load attached.
His ANENG AN870 has a Non-Contact Voltage sensing (NCV) mode which does what it says on the tin. My NCV device is a Fluke 1AC-C2-II VoltAlert Voltage Detector.
Old tech books
Some old tech books I probably shouldn’t have purchased: