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Everything flows through a single function: cmd/2. Actions go in. An updated agent and a list of directives come out. The agent is always just data. Side effects are described as directives, typed data structures that the runtime executes. This makes agents easier to reason about, test, and debug.
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The moment we got any video on the screen was the most exciting part of the project. A flickering, incorrectly timed mess of pixels, but pixels nonetheless.
So, in addition to capturing CCD pixel intensity, the camera also measures a lot of parameters, such as aperture, shutter delay, flash, timestamp of each frame, et cetera.