Tutorial by Examples: ga

The code below shows how to perform asynchronous navigation when the app is in a MasterDetailPage context. public async Task NavigateMasterDetail(Page page) { if (page == null) { return; } var masterDetail = App.Current.MainPage as Mas...

Data types to string formatting Data types like int, float, double, long, boolean can be formatted to string using String.valueOf(). String.valueOf(1); //Output -> "1" String.valueOf(1.0); //Output -> "1.0" String.valueOf(1.2345); //Output -> "1.2345" Stri...

Python import csv with open('/tmp/output.tsv', 'wt') as out_file: tsv_writer = csv.writer(out_file, delimiter='\t') tsv_writer.writerow(['name', 'field']) tsv_writer.writerow(['Dijkstra', 'Computer Science']) tsv_writer.writerow(['Shelah', 'Math']) tsv_writer.writerow(['...

with Ada.Containers.Synchronized_Queue_Interfaces; with Ada.Containers.Unbounded_Synchronized_Queues; with Ada.Text_IO; procedure Producer_Consumer_V1 is type Work_Item is range 1 .. 100; package Work_Item_Queue_Interfaces is new Ada.Containers.Synchronized_Queue_Interfaces ...

An artifact built by Maven can be declared as a Maven plugin by specifying the packaging as maven-plugin in the pom.xml. <packaging>maven-plugin</packaging> You need to declare a dependency on the plugin API and annotations. <dependency> <groupId>org.apache.maven&lt...

Goals are implemented by creating a MOJO. This is a class file annotated with annotations from maven-plugin-annotations. @Mojo(name = "hello") public final class HelloWorldMojo extends AbstractMojo { public void execute() throws MojoExecutionException, MojoFailureException { ...

Some applications may want to create so-called "Fire & Forget" tasks which can be periodically triggered and do not need to return any type of value returned upon completion of the assigned task (for example, purging old temp files, rotating logs, autosaving state). In this example, w...

The Iris flower data set is a widely used data set for demonstration purposes. We will load it, inspect it and slightly modify it for later use. import java.io.File; import java.net.URL; import weka.core.Instances; import weka.core.converters.ArffSaver; import weka.core.converters.CSVLoader; i...

ZeroR is a simple classifier. It doesn't operate per instance instead it operates on general distribution of the classes. It selects the class with the largest a priori probability. It is not a good classifier in the sense that it doesn't use any information in the candidate, but it is often used as...

In order to build a good classifier we will often need to get an idea of how the data is structered in feature space. Weka offers a visualisation module that can help. Some dimensions already seperate the classes quite well. Petal-width orders the concept quite neatly, when compared to petal-widt...

Trees can build models that work on independent features and on second order effects. So they might be good candidates for this domain. Trees are rules that are chaind together, a rule splits instances that arrive at a rule in subgroups, that pass to the rules under the rule. Tree Learners generate...

It is often necessary to execute a long-running task and use the result of that task once it has completed. In this example, we will create two classes: One which implements the Callable<T> interface (where T is the type we wish to return), and one which contains a main() method. AsyncValueT...

Step 1 - Include the uiGrid in your project <link rel="styleSheet" href="release/ui-grid.min.css"/> <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.16/angular.min.js"></script> <script src="/release/ui-grid.min.js">&l...

The hooks are all stored in the hooks sub directory of the Git directory. In most projects, that’s .git/hooks. To enable a hook script, put a file in the hooks subdirectory of your .git directory that is named appropriately (without any extension) and is executable.

In order to be able to directly deploy web project changes to an Web Server, the following steps must be followed. If target server has Internet access, the process is quite simple, as Microsoft has a Web Platform package to do almost everything that is needed. Cleanup Make sure that C:\Progra...

While good software design often maximizes code reusability, sometimes it can be useful to define asynchronous tasks inline in your code via Lambda expressions to maximize code readability. In this example, we will create a single class which contains a main() method. Inside this method, we will us...

The Assets folder is the most common place to store your GLSL-ES shader files. To use them in your OpenGL ES application you need to load them to a string in the first place. This functions creates a string from the asset file: private String loadStringFromAssetFile(Context myContext, String filePa...

Fully configuration of Web deployment without Internet connection (offline) is harder to make because Web platform installer (UI) operates by querying packages list and content from an Internet location. Cleanup Make sure that C:\Program Files\IIS does not contain older version of Microsoft We...

ArcPy is composed of a number of modules: arcpy — the basic functions and geoprocessing tools arcpy.mapping — access to mapping and map document tools arcpy.da — a data access module for working with feature classes and tables arcpy.sa — the Spatial Analyst extension module arcpy.na — the Net...

To simply open a URL, use the webbrowser.open() method: import webbrowser webbrowser.open("http://stackoverflow.com") If a browser window is currently open, the method will open a new tab at the specified URL. If no window is open, the method will open the operating system's default b...