A tweet-sized debugger for visualizing your CSS layouts. Outlines every DOM element on your page a random (valid) CSS hex color.
One-line version to paste in your DevTools
Use $$ if your browser aliases it:
~ 108 byte version
Emmanuel unuigbee
unuigbee
/ ImageDarkness.swift
Created
September 14, 2021 17:11
— forked from adamcichy/ImageDarkness.swift
Determine if a UIImage is generally dark or generally light in Swift 3
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| extension CGImage { | |
| var isDark: Bool { | |
| get { | |
| guard let imageData = self.dataProvider?.data else { return false } | |
| guard let ptr = CFDataGetBytePtr(imageData) else { return false } | |
| let length = CFDataGetLength(imageData) | |
| let threshold = Int(Double(self.width * self.height) * 0.45) | |
| var darkPixels = 0 | |
| for i in stride(from: 0, to: length, by: 4) { | |
| let r = ptr[i] |
unuigbee
/ README.md
Created
September 26, 2016 20:32
— forked from addyosmani/README.md
108 byte CSS Layout Debugger