Tutorial by Examples: ch

Sometimes it is required to display a notification at a specific time, a task that unfortunately is not trivial on the Android system, as there is no method setTime() or similiar for notifications. This example outlines the steps needed to schedule notifications using the AlarmManager: Add a Broa...

The #Const directive is used to define a custom preprocessor constant. These can later be used by #If to control which blocks of code get compiled and executed. #Const DEBUGMODE = 1 #If DEBUGMODE Then Const filepath As String = "C:\Users\UserName\Path\To\File.txt" #Else Cons...

# application.rb config.time_zone = 'Eastern Time (US & Canada)'

# application.rb config.time_zone = 'Eastern Time (US & Canada)' config.active_record.default_timezone = :local

Vim comes with several pre-installed color schemes. In Linux, the color schemes that come with Vim are stored in /usr/share/vim/vim74/colors/ (where 74 is your version number, sans periods); MacVim stores them in /Applications/MacVim.app/Contents/Resources/vim/runtime/colors. Changing Color Schemes...

This is the code for changing output application file name (.apk). The name can be configured by assigning a different value to newName android { applicationVariants.all { variant -> def newName = "ApkName"; variant.outputs.each { output -> def ...

synchronized is a low-level concurrency construct that can help preventing multiple threads access the same resources. Introduction for the JVM using the Java language. anInstance.synchronized { // code to run when the intristic lock on `anInstance` is acquired // other thread cannot enter co...

/* within a class, def, trait or object, but not a constructor */ synchronized { /* code to run when an intrisctic lock on `this` is acquired */ /* no other thread can get the this lock unless execution is suspended with * `wait` on `this` */ }

One of the easier steps is adding the appcache. Appcache will allow your application content to load even when there is no internet access. You won't be able to get any data from your mongo servers, but the static content and assets will be available offline. meteor add appcache

layout_text_to_speech.xml <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:pad...

The commands below execute :command on every line from the first matching from to the first matching to: :/from/,/to/command " from next 'from' to next 'to' :?from?,/to/command " from previous 'from' to next 'to' :?from?,?to?command " from previous 'from' to previous 'to' ...

If you want to detect when your user starts or finishes an activity such as walking, running, or any other activity of the DetectedActivityFence class, you can create a fence for the activity that you want to detect, and get notified when your user starts/finishes this activity. By using a Broadcast...

Above I noticed an example to remove items from a List within a Loop and I thought of another example that may come in handy this time using the Iterator interface. This is a demonstration of a trick that might come in handy when dealing with duplicate items in lists that you want to get rid of. N...

By default, GHCI's prompt shows all the modules you have loaded into your interactive session. If you have many modules loaded this can get long: Prelude Data.List Control.Monad> -- etc The :set prompt command changes the prompt for this interactive session. Prelude Data.List Control.Monad&g...

Find usages / Find usages in file Windows / Linux: Alt + F7 / Ctrl + F7 OS X / macOS: Option + F7 / Ctrl + F7 Highlight usages in file Windows / Linux: Ctrl + Shift + F7 OS X / macOS: Cmd + Shift + F7 Show usages Windows / Linux: Ctrl + Alt + F7 OS X / macOS: Cmd + Option + F7

Elasticsearch uses a YAML (Yet Another Markup Language) configuration file that can be found inside the default Elasticsearch directory (RPM and DEB installs change this location amongst other things). You can set basic settings in config/elasticsearch.yml: # Change the cluster name. All nodes in ...

Swift if let text = self.textView.text where !text.isEmpty { // Do stuff for text } else { // Do stuff for nil text or empty string } Objective-C if (self.textView.text.length > 0){ // Do stuff for text } else { // Do stuff for nil text or empty string }

Callbacks can be used to provide code to be executed after a method has completed: /** * @arg {Function} then continuation callback */ function doSomething(then) { console.log('Doing something'); then(); } // Do something, then execute callback to log 'done' doSomething(function () ...

Callbacks are often used to provide error handling. This is a form of control flow branching, where some instructions are executed only when an error occurs: const expected = true; function compare(actual, success, failure) { if (actual === expected) { success(); } else { failure...

Mostly you will use "normal variables": set(VAR TRUE) set(VAR "main.cpp") set(VAR1 ${VAR2}) But CMake does also know global "cached variables" (persisted in CMakeCache.txt). And if normal and cached variables of the same name exist in the current scope, normal var...