Tutorial by Examples: ga

There are two main ways to create an axes in matplotlib: using pyplot, or using the object-oriented API. Using pyplot: import matplotlib.pyplot as plt ax = plt.subplot(3, 2, 1) # 3 rows, 2 columns, the first subplot Using the object-oriented API: import matplotlib.pyplot as plt fig = ...

If you import two libraries that have conflicting identifiers, then you can specify a prefix for one or both libraries. For example, if library1 and library2 both have an Element class, then you might have code like this: import 'package:lib1/lib1.dart'; import 'package:lib2/lib2.dart' as lib2; /...

Deferred loading (also called lazy loading) allows an application to load a library on demand, if and when it’s needed. To lazily load a library, you must first import it using deferred as. import 'package:deferred/hello.dart' deferred as hello; When you need the library, invoke loadLibrary() us...

There are a several different ways of sorting a collection. Sort() The sort method sorts the collection: $collection = collect([5, 3, 1, 2, 4]); $sorted = $collection->sort(); echo $sorted->values()->all(); returns : [1, 2, 3, 4, 5] The sort method also allows for passing in ...

TabLayout provides a horizontal layout to display tabs, and is commonly used in conjunction with a ViewPager. Make sure the following dependency is added to your app's build.gradle file under dependencies: compile 'com.android.support:design:25.3.1' Now you can add items to a TabLayout in your ...

The most simple way to create a thread is by calling a selector "in the background". This means a new thread is created to execute the selector. The receiving object can be any object, not just self, but it needs to respond to the given selector. - (void)createThread { [self performS...

Go to the (project folder) Then app -> src -> main. Create folder 'assets -> fonts' into the main folder. Put your 'fontfile.ttf' into the fonts folder.

private Typeface myFont; // A good practice might be to call this in onCreate() of a custom // Application class and pass 'this' as Context. Your font will be ready to use // as long as your app lives public void initFont(Context context) { myFont = Typeface.createFromAsset(context.getAss...

public void setFont(TextView textView) { textView.setTypeface(myFont); }

Remember, all the best practices of typical web architecture still apply. For an excellent overview on the subject, please refer to Michael Nygard's excellent book Release It! Design and Deploy Production-Ready Software. Writing your app in Meteor doesn't absolve you of auditing third party librarie...

Variables in Visual Basic are declared using the Dim keyword. For example, this declares a new variable called counter with the data type Integer: Dim counter As Integer A variable declaration can also include an access modifier, such as Public, Protected, Friend, or Private. This works in conju...

In some cases it is necessary to calculate a variable amount of values on separate Futures. Assume to have a List[Future[Int]], but instead a List[Int] needs to be processed. Then the question is how to turn this instance of List[Future[Int]] into a Future[List[Int]]. For this purpose there is the s...

Static server assets must be placed in the private directory. Text files Text files can be accessed by using the Assets.getText(assetPath, [asyncCallback]) method. For example, the following JSON file is named my_text_asset.json and is located in the private directory: { "title": &...

When reading tabular datasets with the read.* functions, R automatically looks for missing values that look like "NA". However, missing values are not always represented by NA. Sometimes a dot (.), a hyphen(-) or a character-value (e.g.: empty) indicates that a value is NA. The na.strings ...

POST /token HTTP/1.1 Host: server.example.com Content-Type: application/x-www-form-urlencoded grant_type=refresh_token&refresh_token=[REFRESH_TOKEN] &client_id=[APP_KEY]&client_secret=[APP_SECRET] Source

To use multiple databases in Django, just specify each one in settings.py: DATABASES = { 'default': { 'NAME': 'app_data', 'ENGINE': 'django.db.backends.postgresql', 'USER': 'django_db_user', 'PASSWORD': os.environ['LOCAL_DB_PASSWORD'] }, 'users': {...

It's also possible to easily share roles with the community or download roles that have been created by other members of the community with Ansible Galaxy. Ansible ships with a command line tool called ansible-galaxy that can be used to install roles in the role directory defined in the ansible.cfg...

Encoding and decoding functions for a variety of Unicode encodings can be found in the Data.Text.Encoding module. ghci> import Data.Text.Encoding ghci> decodeUtf8 (encodeUtf8 "my text") "my text" Note that decodeUtf8 will throw an exception on invalid input. If you wa...

The :l or :load command type-checks and loads a file. $ echo "f = putStrLn \"example\"" > example.hs $ ghci GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help ghci> :l example.hs [1 of 1] Compiling Main ( example.hs, interpreted ) Ok, modules ...

Example uses basic HTTP, which translate easily to cURL and other HTTP applications. They also match the Sense syntax, which will be renamed to Console in Kibana 5.0. Note: The example inserts <#> to help draw attention to parts. Those should be removed if you copy it! PUT /my_index <1&gt...