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By default we’ll log as much information as possible in the prototype. We can later put this behind debugging flags. Every time a command is run we should see: the call path, and the final payload sent to GHCi.
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“The oil price reaction is telling us that, so far, this is contained,” Pickering said. “The expectation is the U.S. will do something to open, and keep open, the strait so oil can flow.”
Real game engines use this pattern (or its 3D cousin, the Octree) for broad-phase collision detection: the quadtree quickly identifies candidate pairs, and a more expensive narrow-phase check tests the actual geometry.