Useful tips for everyday
How does capacitive power transfer work? In capacitive coupling (electrostatic induction), the conjugate of inductive coupling, energy is transmitted by electric fields between electrodes such…
Should game objects render themselves? When the object no longer wants the object drawn it unregisters the sprite, or marks it inactive. All that said.…
How does Eevee do shadow mapping in Blender? Eevee uses Shadow Mapping techniques to properly shadow the light coming directly from light objects. A shadow…
How to display a 24 hour clock in JavaScript? In the 24-hour format, time is displayed in the form of HH : MM : SS.…
How to execute a PDO query in PHP? PDO::query. Description. PDO::query() executes an SQL statement in a single function call, returning the result set (if…
Do jets run on compressed air? Jet engines “contain” compressed air because the engine itself compresses it using the energy from burning fuel. Can jet…
How to count columns with the same ID? You need to count the value of the column value for each id: select t.id, (select count…
How to create an object using the COM API? Details on creating objects using the COM API can be found in the dedicated page. To…
How do I mass delete songs from my playlist? Hold down the shift button on the song you want to delete (it should turn a…
What is the closed unit ball? A unit ball (open or closed) is a ball of radius 1. A subset of a metric space is…