Tutorial by Examples: g

To list all the git repository locations on your you can run the following find $HOME -type d -name ".git" Assuming you have locate, this should be much faster: locate .git |grep git$ If you have gnu locate or mlocate, this will select only the git dirs: locate -ber \\.git$

var Vehicle = Backbone.Model.extend({ description: function () { return 'I have ' + this.get('wheels') + ' wheels'; } }); var Bicycle = Vehicle.extend({ defaults: { wheels: 2 } }); var Car = Vehicle.extend({ defaults: { wheels: 4 } })...

To find a file in the Hadoop Distributed file system: hdfs dfs -ls -R / | grep [search_term] In the above command, -ls is for listing files -R is for recursive(iterate through sub directories) / means from the root directory | to pipe the output of first command to the second grep command t...

Note: The shown CMake error messages already include the fix for "non-standard" library/tool installation paths. The following examples just demonstrate more verbose CMake find_package() outputs. CMake internally supported Package/Module If the following code (replace the FindBoost modul...

In order to build an IPA file in XCode, you require to sign your application with a certificate and provisioning profile. These can be created at https://developer.apple.com/account/ios/profile/create Provisioning Profile Types Provisioning Profiles are split into two types, Development, and Distr...

Format a date: Date date = new Date(); DateFormat df = DateFormat.getDateInstance(DateFormat.MEDIUM); String localizedDate = df.format(date) Format a date and time. Date is in short format, time is in long format: Date date = new Date(); DateFormat df = DateFormat.getDateTimeInstance(DateFor...

Based on this blog post. Assume you have a method like this: def get[T]: Option[T] = ??? When you try to call it without specifying the generic parameter, Nothing gets inferred, which is not very useful for an actual implementation (and its result is not useful). With the following solution t...

Grunt is a JavaScript Task Runner, used for automation of repetitive tasks like minification, compilation, unit testing, linting, etc. In order to get started, you'll want to install Grunt's command line interface (CLI) globally. npm install -g grunt-cli Preparing a new Grunt project: A typica...

Guice is the default dependency injection (further DI) framework of Play. Other frameworks may be used as well, but using Guice makes development efforts easier, since Play takes care for things under the veil. Injection of Play API-s Starting from Play 2.5 several API-s, which were static in the ...

Thread Pools are used mostly calling methods in ExecutorService. The following methods can be used to submit work for execution: MethodDescriptionsubmitExecutes a the submitted work and return a future which can be used to get the resultexecuteExecute the task sometime in the future without gettin...

CountDownTimer is useful for repeatedly performing an action in a steady interval for a set duration. In this example, we will update a text view every second for 30 seconds telling how much time is remaining. Then when the timer finishes, we will set the TextView to say "Done." TextView ...

#include <omp.h> #include <stdio.h> int main (int argc, char *argv[]) { #pragma omp parallel { printf ("Hello world! I'm thread %d out of %d threads.\n", omp_get_thread_num(), omp_get_num_threads()); } return 0; } This code simply ...

Dagger 2 supports creating a component from multiple modules. You can create your component this way: @Singleton @Component(modules = {GeneralPurposeModule.class, SpecificModule.class}) public interface MyMultipleModuleComponent { void inject(MyFragment myFragment); void inject(MyServic...

QRCodeReaderView implements an Android view which show camera and notify when there's a QR code inside the preview. It uses the zxing open-source, multi-format 1D/2D barcode image processing library. Adding the library to your project Add QRCodeReaderView dependency to your build.gradle dependen...

This example describes passing an event using the Otto Event Bus. To use the Otto Event Bus in Android Studio you have to insert the following statement in your modules gradle file: dependencies { compile 'com.squareup:otto:1.3.8' } The event we'd like to pass is a simple Java object: pu...

To receive an event it is necessary to implement a method with the event type as parameter and annotate it using @Subscribe. Furthermore you have to register/unregister the instance of your object at the BusProvider (see example Sending an event): public class MyFragment extends Fragment { pri...

btn class of Twitter-bootstrap can be used with any of the following html elements. anchor button input with both type="button" and type="submit" Below are examples of all possible use cases of btn class <a class="btn" href="#" role="button&qu...

Overriding properties (both read-only and mutable): abstract class Car { abstract val name: String; open var speed: Int = 0; } class BrokenCar(override val name: String) : Car() { override var speed: Int get() = 0 set(value) { throw UnsupportedOpera...

When automating the provisioning of new nodes to a swarm, you need to know what the right join token is for the swarm as well as the advertised address of the manager. You can find this out by running the following commands on any of the existing manager nodes: # grab the ipaddress:port of the mana...

A boolean array can be created manually by using dtype=bool when creating the array. Values other than 0, None, False or empty strings are considered True. import numpy as np bool_arr = np.array([1, 0.5, 0, None, 'a', '', True, False], dtype=bool) print(bool_arr) # output: [ True True False ...