octocat

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

ccstone

————————————————————————————————————————————————————————————————————————————————————————————————————
BBEdit / BBEdit-Lite / TextWrangler Regular Expression Guide              Modified: 2018/08/10 01:19
————————————————————————————————————————————————————————————————————————————————————————————————————

NOTES: 

The PCRE engine (Perl Compatible Regular Expressions) is what BBEdit and TextWrangler use.

Items I'm unsure of are marked '# PCRE?'.  The list while fairly comprehensive is not complete.

moutend

[Swift] Equalizing Audio Signal with vDSP.Biquad

This script reads /tmp/input.wav, applies the low-pass filter, and writes the modified signal as /tmp/output.wav.

To run, open Terminal.app and hit the following command:

$ swift main.swift

PadraigK

// Example of wrapping `UIApplication.keyboardDidShowNotification` payload 

struct KeyboardDidShowPayload {
    let keyboardFrameBegin: CGRect?
    let keyboardFrameEnd: CGRect?
}

extension NotificationWrapper where Payload == KeyboardDidShowPayload {
    @MainActor static let keyboardDidShow: Self = .init(
        name: UIApplication.keyboardDidShowNotification,

nicklockwood

Hacking UIView animation blocks for fun and profit

In this article, I'm going to explore a way that we can create views that implement custom Core Animation property animations in a natural way.

As we know, layers in iOS come in two flavours: Backing layers and hosted layers. The only difference between them is that the view acts as the layer delegate for its backing layer, but not for any hosted sublayers.

In order to implement the UIView transactional animation blocks, UIView disables all animations by default and then re-enables them individually as required. It does this using the actionForLayer:forKey: method.

Somewhat strangely, UIView doesn't enable animations for every property that CALayer does by default. A notable example is the layer.contents property, which is animatable by default for a hosted layer, but cannot be animated using a UIView animation block.

kyleve

/**
 Provides the ability to verify key paths at compile time.
 
 If "keyPath" does not exist, a compile-time error will be generated.
 
 Example:
    // Verifies "isFinished" exists on "operation".
    NSString *key = SQKeyPath(operation, isFinished);
 
    // Verifies "isFinished" exists on self.

guifromrio

This can reduce files to ~15% of their size (2.3M to 345K, in one case) with no obvious degradation of quality.

ghostscript -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf

Other options for PDFSETTINGS:

• /screen selects low-resolution output similar to the Acrobat Distiller "Screen Optimized" setting.
• /ebook selects medium-resolution output similar to the Acrobat Distiller "eBook" setting.
• /printer selects output similar to the Acrobat Distiller "Print Optimized" setting.
• /prepress selects output similar to Acrobat Distiller "Prepress Optimized" setting.

christianselig

extension UIColor {
    /// Blends this color into the specified color, as if this color was overlaid on top of the other at the specified alpha, but our result will instead be opaque. For instance if self was green, and we passed white and 0.1 alpha/opacity, the result would be a light, faded green.
    ///
    /// - Note: This process is also called alpha compositing.
    func blend(intoColor otherColor: UIColor, atOpacity alpha: CGFloat) -> UIColor {
        let sourceRGB = rgb
        let otherRGB = otherColor.rgb
        
        return UIColor(
            red: (sourceRGB.red * alpha) + (otherRGB.red * (1.0 - alpha)),

sohayb

//Protocal that copyable class should conform
protocol Copying {
    init(original: Self)
}

//Concrete class extension
extension Copying {
    func copy() -> Self {
        return Self.init(original: self)
    }

beesandbombs

// by dave
float[][] result;
float t, c;

float ease(float p) {
  p = c01(p);
  return 3*p*p - 2*p*p*p;
}

float ease(float p, float g) {