dilumdesilva

Understanding UIViewController Rotation

Problem

To enable the rotation of a single view controller used to display the preview of Images/Videos. It is intuitive to allow user to rotate there device and screen changes accordingly, so it feels pleasant. But to achieve this, we need to enable the (almost) all Supported Device orientations.

Ex: `Portrait`, `LandscapeLeft`, `LandscapeRight`.

dilumdesilva

    import CoreMotion // Import CoreMotion (header)
   
    // Class vars
    var pitch = 0.0
    var attitude: CMAttitude?
    var roll = 0.0
    var yaw = 0.0
    let motionManager = CMMotionManager() // Create motionManager instance 

dilumdesilva

    import CoreMotion // Import CoreMotion (header)
   
    // Class vars
    var pitch = 0.0
    var attitude: CMAttitude?
    var roll = 0.0
    var yaw = 0.0
    let motionManager = CMMotionManager() // Create motionManager instance 

dilumdesilva

extension Encodable {
	/// converts a codable model to a dictionary
	var dictionary: [String: Any]? {
		guard let data = try? JSONEncoder().encode(self) else { return nil }
		return (try? JSONSerialization.jsonObject(with: data, options: .allowFragments)).flatMap { $0 as? [String: Any] }
	}
}

dilumdesilva

Creating a "DMG installer" for OS X

A DMG Installer is convenient way to provide end-users a simple way to install an application bundle. They are basically a folder with a shortcut to the Applications directory but they can be customized with icons, backgrounds, and layout properties. A DMG file (.dmg) is a Mac OS X Disk Image file and it is used to package files or folders providing compression, encryption, and read-only to the package.

##Creating the DMG file #Disk Utility

dilumdesilva

Activate MS Office 2019/2016 for macOS - Microsoft_Office_2019_VL_Serializer

Office 2019 above

2019-06-03

Note that Office2019 DO NOT support activate via simple copy/paste plist license file which is the simplest way to activate Office 2016. Fortunately, you can also use the VL Serializer tool, just install Office 2019 and Serializer, then run Serializer to activate.

Ref

dilumdesilva

//Improved random number generator
source := rand.NewSource(time.Now().UnixNano())
r := rand.New(source)
newPos := r.Intn(len(slice) - 1)

dilumdesilva

personal aliases

• alias openzsh="open -e /Users/dilumdesilva/.zshrc"
• alias openzsh="open -e ~/.zshrc"
• alias reloadzsh="source ~/.zshrc"
• alias open="open ."

git aliases

• alias add="git add"
• alias commit="git commit"
• alias check="git checkout"

dilumdesilva

<?php
if(!isset($_SESSION)) { session_start(); }
$username = $_POST['user_name'];
$_SESSION['usernames'] = $username;
?>