Tutorial by Examples: ti

Here is an example demonstrating the basic usage of pickle:- # Importing pickle try: import cPickle as pickle # Python 2 except ImportError: import pickle # Python 3 # Creating Pythonic object: class Family(object): def __init__(self, names): self.sons = names ...

Identifying your user is only part of security. Once you know who they are, you need a way to control their access to data in your database. Firebase Database Rules allow you to control access for each user. For example, here's a set of security rules that allows anyone to read the path /foo/, but n...

The Firebase Realtime Database is schemaless. This makes it easy to change things as you develop, but once your app is ready to distribute, it's important for data to stay consistent. The rules language includes a .validate rule which allows you to apply validation logic using the same expressions u...

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...

Here's an example of a rule that gives each authenticated user a personal node at /users/$user_id where $user_id is the ID of the user obtained through Authentication. // These rules grant access to a node matching the authenticated // user's ID from the Firebase auth token { "rules"...

If you have one of the supported Linux distributions, you can follow the steps on the .NET Core website: https://www.microsoft.com/net If you have an unsupported distribution: Download the .NET Core SDK from the links, picking the distribution closer to the used one. https://www.microsoft.com/net...

With more and more battery optimizations being put into the Android system over time, the methods of the AlarmManager have also significantly changed (to allow for more lenient timing). However, for some applications it is still required to be as exact as possible on all Android versions. The follow...

First, create a key file, e.g., vault_pass_file, which ideally contains a long sequence of random characters. In linux systems you could use pwgen to create a random password file: pwgen 256 1 > vault_pass_file Then, use this file to encrypt sensitive data, e.g., groups_vars/group.yml: ANSI...

You can run a play which relies on vault-encrypted templates by using the local_action module. --- - name: Decrypt template local_action: "shell {{ view_encrypted_file_cmd }} {{ role_path }}/templates/template.enc > {{ role_path }}/templates/template" changed_when: False - ...

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); }

Grant Vibration Permission before you start implement code, you have to add permission in android manifest : <uses-permission android:name="android.permission.VIBRATE"/> Import Vibration Library import android.os.Vibrator; Get instance of Vibrator from Context Vibrator vibr...

You can create vibration patterns by passing in an array of longs, each of which represents a duration in milliseconds. The first number is start time delay. Each array entry then alternates between vibrate, sleep, vibrate, sleep, etc. The following example demonstrates this pattern: vibrate 100...

using the vibrate(long milliseconds) Vibrator vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); vibrator.vibrate(500);

For one-time, non-constant requests for a user's physical activity, use the Snapshot API: // Remember to initialize your client as described in the Remarks section Awareness.SnapshotApi.getDetectedActivity(client) .setResultCallback(new ResultCallback<DetectedActivityResult>() { ...

// Remember to intialize your client as described in the Remarks section Awareness.SnapshotApi.getLocation(client) .setResultCallback(new ResultCallback<LocationResult>() { @Override public void onResult(@NonNull LocationResult locationResult) { Location lo...

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...

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...

Another use of RODBC is in connecting with SQL Server Management Database. We need to specify the 'Driver' i.e. SQL Server here, the database name "Atilla" and then use the sqlQuery to extract either the full table or a fraction of it. library(RODBC) cn <- odbcDriverConnect(connect...