Tutorial by Examples: g

public class MyPage : ContentPage { RelativeLayout _layout; Label MiddleText; public MyPage() { _layout = new RelativeLayout(); MiddleText = new Label { Text = "Middle Text" }; MiddleText.SizeChanged += ...

/* SD card datalogger This example shows how to log data from three analog sensors to an SD card using the SD library. The circuit: * analog sensors on analog ins 0, 1, and 2 * SD card attached to SPI bus as follows: ** MOSI - pin 11 ** MISO - pin 12 ** CLK - pin 13 ** CS - ...

> library(ggplot2) > ggplot(iris,aes(Sepal.Width)) + geom_density() + xlim(1,3.5) Using xlim or ylim the plot is not cutted, ggplot subsets the data before calling the stat function (stat_density in this case). You can see it in the warning message. Warning message: Removed 19 rows cont...

ggplot(iris[iris$Species == "setosa",],aes(Sepal.Width)) + geom_density() Here, we are subsetting the dataframe before passing it to ggplot. It is a very useful tool derived from the data frame data structure. To make the code more readable, one can also use dplyr's filter: libr...

When testing with Google App Engine's testing library the challenges of eventual consistency are present in the same manner they will be in production. Therefore in order to write something into the datastore to test retrieval you have to create a context which is strongly consistent. type Foo str...

By default, mix new <projectname> will generate a .gitignore file in the project root that is suitable for Elixir. # The directory Mix will write compiled artifacts to. /_build # If you run "mix test --cover", coverage assets end up here. /cover # The directory Mix downloads...

install loaders npm install --save-dev ts-loader source-map-loader tsconfig.json { "compilerOptions": { "sourceMap": true, "noImplicitAny": true, "module": "commonjs", "target": "es5", "jsx&quo...

/// <summary> /// Button with some additional options /// </summary> public class TurboButton : Button { public static readonly BindableProperty StringDataProperty = BindableProperty.Create( propertyName: "StringData", returnType: typeof(string), d...

The simplest way to wrap and access a piece of state is Agent. The module allows one to spawn a process that keeps an arbitrary data structure and allows one to send messages to read and update that structure. Thanks to this the access to the structure is automatically serialized, as the process onl...

To install openshift follow installation steps on https://install.openshift.com

Here is the corresponding Java configuration: Add this annotation to an @Configuration class to have the Spring Security configuration defined in any WebSecurityConfigurer or more likely by extending the WebSecurityConfigurerAdapter base class and overriding individual methods: @Configuration @En...

This example uses SqlConnection, but any IDbConnection is supported. Also any IDbTransaction is supported from the related IDbConnection. public void UpdateWidgetQuantity(int widgetId, int quantity) { using(var conn = new SqlConnection("{connection string}")) { conn.Open()...

We would be creating mongodb as a replica set having 3 instances. One instance would be primary and the other 2 instances would be secondary. For simplicity, I am going to have a replica set with 3 instances of mongodb running on the same server and thus to achieve this, all three mongodb instances...

Given a file Sample called movieslist. Troy Gladiator Robin Hood King Arthur BraveHeart The Last Samurai Normal grep returns grep "Gladiator" movieslist Gladiator Now,using grep to print the below or above lines of the file. To print the below line grep -A 1 Gladiator movie...

In Scala you can define your own operators: class Team { def +(member: Person) = ... } With the above defines you can use it like: ITTeam + Jack or ITTeam.+(Jack) To define unary operators you can prefix it with unary_. E.g. unary_! class MyBigInt { def unary_! = ... } var ...

Groups can be added and nested within a report to organize the data in a hierarchy of sorted lists. Outer groups supersede any groups within. This directly affects which records are affected by the Previous keyword. Select Insert, Group from the menu bar. Select the field to group the data by fr...

A thing to look out for when using the toString method in Kotlin is the handling of null in combination with the String?. For example you want to get text from an EditText in Android. You would have a piece of code like: // Incorrect: val text = view.textField?.text.toString() ?: "" ...

You can use the following instructions to install Theano and configure the GPU (assume a freshly installed Ubuntu 14.04): # Install Theano sudo apt-get install python-numpy python-scipy python-dev python-pip python-nose g++ libopenblas-dev git sudo pip install Theano # Install Nvidia drivers, ...

You can run Theano on multiple CPU cores with the OMP_NUM_THREADS=[number_of_cpu_cores] flag. Example: OMP_NUM_THREADS=4 python gpu_test.py The script theano/misc/check_blas.py outputs information regarding which BLAS is used: cd [theano_git_directory] OMP_NUM_THREADS=4 python theano/misc/ch...

FirebaseUI is just an open-source library by Google that provides easy UI bindings for Firebase Auth and Firebase Database. To begin adding FirebaseUI to your app, add these dependencies in your app's build.gradle file: android { // ... } dependencies { // Required for FirebaseUI Dat...