Ray Bellis raybellis
raybellis
/ ArrayModalValue.swift
Created
November 16, 2022 22:39
A Swift extension to find the most common (modal) value among an array of (hashable) values
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| extension Array where Element : Hashable { | |
| func modalValue() -> Self.Element? { | |
| // populate a dictionary of element vs count | |
| var dict: [Self.Element : Int] = [:] | |
| self.forEach { v in | |
| if let count = dict[v] { | |
| dict[v] = count + 1 | |
| } else { |
raybellis
/ projection.js
Last active
October 7, 2024 14:45
Orthographic projection per https://stackoverflow.com/questions/79061549/project-3d-coordinates-on-2d-plane
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| const p1 = { x: 59197011, y: 42146958, z: 42913136384, sx: 24, sy: 470 }; | |
| const p2 = { x: 59197011, y: 21399618, z: 42913136384, sx: 254, sy: 664 }; | |
| const p3 = { x: 6735114, y: 33773393, z: 4287356928 , sx: 808, sy: 65 }; | |
| const p4 = { x: 26245172, y: 42146958, z: 4293136384, sx: 495, sy: 212 }; | |
| function project({x, y, z}) { | |
| // use p4 as the origin | |
| x -= p4.x; | |
| y -= p4.y; |
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