Tutorial by Examples: n

The functions save and load allow us to specify the environment where the object will be hosted: save(iris, cars, file = "myIrisAndCarsData.Rdata", envir = foo <- new.env()) load("myIrisAndCarsData.Rdata", envir = foo) foo$cars save(iris, cars, file = "myIrisAndCar...

If a file may contain Windows or Unix-like line endings (or even a mixture of both) then the intended text replacement may not work as expected. Sample: $ echo -e 'Entry 1\nEntry 2.1\tEntry 2.2\r\nEntry 3\r\n\r\n' \ > | awk -F'\t' '$1 != "" { print $1 }' \ > | hexdump -c 0000000...

Copying files copy copies the source file in the first argument to the destination in the second argument. The resolved destination needs to be in a directory that is already created. if (copy('test.txt', 'dest.txt')) { echo 'File has been copied successfully'; } else { echo 'Failed to ...

Steps: Create Empty .Net Core Web App: Go to wwwroot, and create a normal html page called Index.html: Configure Startup.cs to accept static files (this will require to add "Microsoft.AspNetCore.StaticFiles": "1.0.0" library in the “project.json” file): ...

public class Person { private final String salutation; private final String firstName; private final String middleName; private final String lastName; private final String suffix; private final Address address; private final boolean isFemale; private final boolean isEmployed; private final ...

Another example: a Weapon that shoots out Bullets. The Weapon acts as an object pool for the Bullets it creates. public class Weapon : MonoBehaviour { // The Bullet prefab that the Weapon will create public Bullet bulletPrefab; // This List is our object pool, which starts...

List can contain n number of items. The items in list are separated by comma >> a = [1,2,3] To access an element in the list use the index. The index starts from 0 >> a[0] >> 1 Lists can be nested. >> nested_list = [ [1,2,3], ['a','b','c'] ] >> nested_list...

Here counter is a child component accessed by demo which is a parent component using v-model. // child component Vue.component('counter', { template: `<div><button @click='add'>+1</button> <button @click='sub'>-1</button> <div>this is inside the child c...

RubyInline is a framework that lets you embed other languages inside your Ruby code. It defines the Module# inline method, which returns a builder object. You pass the builder a string containing code written in a language other than Ruby, and the builder transforms it into something that you can ca...

After spending more than 5 hours, i found this easy solution: -To verify that the system has a CUDA-capable GPU, run the following command: lspci | grep -i NVIDIA You will see output similar to the following example (showing an NVIDIA Tesla K80/M60 card): -Disabling the nouveau driver: sudo...

The most basic way to structure your code using spring boot for good automatic package scanning is using @SpringBootApplication annotation. This annotation provide in itself 3 other annotations that helps with automatic scanning: @SpringBootConfiguration, @EnableAutoConfiguration, @ComponentScan (mo...

You can use @ComponentScan in order to configure more complex package scanning. There is also @ComponentScans that act as a container annotation that aggregates several @ComponentScan annotations. Basic code examples @ComponentScan public class DemoAutoConfiguration { } @ComponentScans({@Co...

Spring boot is based on a lot of pre-made auto-configuration parent projects. You should already be familiar with spring boot starter projects. You can easily create your own starter project by doing the following easy steps: Create some @Configuration classes to define default beans. You should...

You might need a v-model on a computed property. Normally, the v-model won't update the computed property value. The template: <div id="demo"> <div class='inline-block card'> <div :class='{onlineMarker: true, online: status, offline: !status}'></div> ...

@interface NSString : NSObject (NSObject is a base class of NSString class). You can use below methods for allocation of string class: - (instancetype)init + (instancetype)new + (instancetype)alloc For Copy any object : - (id)copy; - (id)mutableCopy; For compare objects : - (BOOL...

Install vue-cli: npm install -g vue-cli start a project like: vue init <template> <project-name> where <template>: webpack - A full-featured Webpack + vue-loader setup with hot reload, linting, testing & css extraction. webpack-simple - A simple Webpa...

public class ConvertMapToList { public static void main(String[] args) { Map<Integer, String> map = new HashMap<>(); map.put(10, "apple"); map.put(20, "orange"); map.put(30, "banana"); map.put(40, "w...

CSS properties which add visual decorations but are not supported can be replaced with image tag. For example: border-radius is not supported in Yahoo! Mail, Outlook 2007/10/13 +, Outlook 03/Express/Mail & Android 4 (Gmail) + To work around this we can add images with border radius in them i.e...

Calling C code from Go package main /* // Everything in comments above the import "C" is C code and will be compiles with the GCC. // Make sure you have a GCC installed. int addInC(int a, int b) { return a + b; } */ import "C" import "fmt" func ma...

/** Adds user to the list of poople which are assigned the tasks. - Parameter name: The name to add - Returns: A boolean value (true/false) to tell if user is added successfully to the people list. */ func addMeToList(name: String) -> Bool { // Do something.... ...