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def isPerfectSquare(x):
  sr = math.sqrt(x)
  return (sr - math.floor(sr)) == 0

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🏋🏻‍♂️ 👨🏻‍💻

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//
//  PlayButton.swift
//  ProgressView
//
//  Created by WonJo on 10/03/2019.
//  Copyright © 2019 WonJo. All rights reserved.
//

import UIKit

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class RaindropView: UIView {

    var images: [CGImage] {
        return [UIImage(named: "rain"),
                UIImage(named: "rain"),
                UIImage(named: "rain"),
                UIImage(named: "rain"),
                UIImage(named: "rain")].map({ $0?.cgImage }).compactMap({ $0 })
    }

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#if os(iOS)

import AVFoundation
import RxCocoa
import RxSwift

extension AVSpeechSynthesizer: HasDelegate {
    public typealias Delegate = AVSpeechSynthesizerDelegate
}

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buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${PROJECT_DIR}/${INFOPLIST_FILE}")
buildNumber=$(($buildNumber + 1))
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $buildNumber" "${PROJECT_DIR}/${INFOPLIST_FILE}"

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	func makeTextureFromCVPixelBuffer(pixelBuffer: CVPixelBuffer, textureFormat: MTLPixelFormat) -> MTLTexture? {
		let width = CVPixelBufferGetWidth(pixelBuffer)
		let height = CVPixelBufferGetHeight(pixelBuffer)
		
		// Create a Metal texture from the image buffer.
		var cvTextureOut: CVMetalTexture?
		CVMetalTextureCacheCreateTextureFromImage(kCFAllocatorDefault, textureCache, pixelBuffer, nil, textureFormat, width, height, 0, &cvTextureOut)
		
		guard let cvTexture = cvTextureOut, let texture = CVMetalTextureGetTexture(cvTexture) else {
			CVMetalTextureCacheFlush(textureCache, 0)

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The Best of the Best Practices (BOBP) Guide for Python

A "Best of the Best Practices" (BOBP) guide to developing in Python.

In General

Values

• "Build tools for others that you want to be built for you." - Kenneth Reitz
• "Simplicity is alway better than functionality." - Pieter Hintjens

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class DownloadCircleProgressView: UIView {

    // Interface
    var progress: Float = 0.0 {
        didSet {
            // animate from [oldValue] to [newValue]
            animateProgressLayer(from: CGFloat(oldValue), to: CGFloat(progress), duration: 0.1)
        }
    }

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class TriangleView: UIView {

    override func draw(_ rect: CGRect) {
        guard let context = UIGraphicsGetCurrentContext() else { return }
        context.beginPath()
        context.move(to: CGPoint(x: rect.midX, y: rect.minY))
        context.addLine(to: CGPoint(x: rect.minX, y: rect.maxY))
        context.addLine(to: CGPoint(x: rect.maxX, y: rect.maxY))
        context.closePath()
        context.setFillColor(UIColor.black.withAlphaComponent(0.6).cgColor)