Tutorial by Examples: u

1. Overview In this article we are going to discuss how to get started with Enterprise JavaBeans (EJB). We will use JBoss AS 7.1.1.Final, but you are free to use any server of your choice. 2. Maven Dependencies for Bean In order to use EJB make sure you add the latest version of it to the depende...

Counting sort is an integer sorting algorithm for a collection of objects that sorts according to the keys of the objects. Steps Construct a working array C that has size equal to the range of the input array A. Iterate through A, assigning C[x] based on the number of times x appeared in A. Tr...

;;Recursively print the elements of a list (defun print-list (elements) (cond ((null elements) '()) ;; Base case: There are no elements that have yet to be printed. Don't do anything and return a null list. (t ;; Recursive case ;; Print the next elem...

Here is an example of an Azure Powershell automation runbook that deletes any blobs in an Azure storage container that are older than a number of days. This may be useful for removing old SQL backups to save cost and space. It takes a number of parameters which are self explanatory. Note: I have ...

View tables ActiveRecord::Base.connection.tables Delete any table. ActiveRecord::Base.connection.drop_table("users") ------------OR---------------------- ActiveRecord::Migration.drop_table(:users) ------------OR--------------------- ActiveRecord::Base.connect...

Most examples of a function returning a value involve providing a pointer as one of the arguments to allow the function to modify the value pointed to, similar to the following. The actual return value of the function is usually some type such as an int to indicate the status of the result, whether ...

Debugging by raising exceptions is far easier than squinting through print log statements, and for most bugs, its generally much faster than opening up an irb debugger like pry or byebug. Those tools should not be your first step. Debugging Ruby/Rails Quickly: 1. Fast Method: Raise an Exceptio...

Often the easiest solution is simply to pass 2D and higher arrays around as flat memory. /* create 2D array with dimensions determined at runtime */ double *matrix = malloc(width * height * sizeof(double)); /* initialise it (for the sake of illustration we want 1.0 on the diagonal) */ int x, y...

String to immutable ubyte[] string s = "unogatto"; immutable(ubyte[]) ustr = cast(immutable(ubyte)[])s; assert(typeof(ustr).stringof == "immutable(ubyte[])"); assert(ustr.length == 8); assert(ustr[0] == 0x75); //u assert(ustr[1] == 0x6e); //n assert(ustr[2] == 0x6f); //o...

//Enabling the proximity Sensor - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; [[UIDevice currentDevice] setProximityMonitoringEnabled:YES]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sensorStateMonitor:) name:@"UIDevice...

The Google Analytics APIs allow you to access data within Google Analytics. It should not be confused with the measurement protocol which is used for inserting data into Google Analytics. The Google Analytics API is split into serval parts. Google Analytics Reporting APIs The Google Analytic...

MULTIPLY 5 BY a MULTIPLY a BY b ON SIZE ERROR PERFORM error-handling NOT ON SIZE ERROR PERFORM who-does-that END-MULTIPLY MULTIPLY a BY b GIVING x ROUNDED MODE IS PROHIBITED y ROUNDED MODE IS NEAREST-EVEN z ROUNDED ...

Any method in Rails model can return boolean value. simple method- ##this method return ActiveRecord::Relation def check_if_user_profile_is_complete User.includes( :profile_pictures,:address,:contact_detail).where("user.id = ?",self) end Again simple method returning bool...

This example uses the official Google .net Client library. PM> Install-Package Google.Apis.AnalyticsReporting.v4 Authorization Requires one of the following OAuth scopes: https://www.googleapis.com/auth/analytics.readonly https://www.googleapis.com/auth/analytics Oauth2 // The...

Create a folder in your project folder, and add your fonts to it. Example: Example: Here we added a folder in root called "mystuff", then "fonts", and inside it we placed our fonts: Add the below code in package.json. { ... "rnpm":...

Inside a Project configuration, you can Create build configuration: Manually Provide a Name and a Description. The Build Configuration ID is generated from the ProjectName, and the Build Configuration Name's. Once your configuraion is Saved, you can specify a Version Control Settings. This will ...

Example uses the Google APIs Dotnet client library. PM> Install-Package Google.Apis.AnalyticsReporting.v4 /// <summary> /// This method requests Authentcation from a user using Oauth2. /// Credentials are stored in System.Environment.SpecialFolder.Personal /// Do...

The backup menu is in the Administration Panel. And in the Left menu, inside the Server Administration, go on Backup. TeamCity (as of v10) does not automatically backup, but you can get TeamCity to back itself up on a daily basis by scheduling a task to hit the REST api. Typically you would also n...

// Let's take an arbitrary piece of data, a 4-byte integer in this case let some_data: u32 = 14; // Create a constant raw pointer pointing to the data above let data_ptr: *const u32 = &some_data as *const u32; // Note: creating a raw pointer is totally safe but dereferencing a raw pointe...

// Let's take a mutable piece of data, a 4-byte integer in this case let mut some_data: u32 = 14; // Create a mutable raw pointer pointing to the data above let data_ptr: *mut u32 = &mut some_data as *mut u32; // Note: creating a raw pointer is totally safe but dereferencing a raw pointe...