Tutorial by Examples: w

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...

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 ...

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...

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...

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...

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...

To use the example above on a blade template to hide content from the user, you would typically do something like this: @can('view-content', $content) <! -- content here --> @endcan To completely prevent navigation to the content, you can do the following in your controller: if(Gate::a...

Writing Policies follows much the same pattern as writing Gates. The content permission gate can be rewritten as a Policy like this: function view($user, $content) { return $user->isSubscribedTo($content->id); } Policies can contain more methods as needed to take care of all authori...

Via The User model The Laravel User model contains two methods that help with authorisations using Policies; can and can't. These two can be used to determine if a user has authorisation or not on a model respectively. To check if a user can view a content or not, you can do the following: if($us...

Apps written for macOS are usually written with Apple's Frameworks. The frameworks that almost every app will use are: AppKit - for creating and managing UI elements Foundation - for common non-UI objects and operations There are other common frameworks that are used in many, but not all apps...

This example uses the icarus verilog compiler. Step 1: Create a file called hello.v module myModule(); initial begin $display("Hello World!"); // This will display a message $finish ; // This causes the simulation to end. Without, it would go on..and on. end endm...

NSE functions should be used in interactive programming. However, when developping new functions in a new package, it's better to use SE version. Load dplyr and lazyeval : library(dplyr) library(lazyeval) Filtering NSE version filter(mtcars, cyl == 8) filter(mtcars, cyl < 6) filter(mtca...

In the following, weight is declared as a mutable field. type person = { name: string; mutable weight: int };; Remark: As far as design is concerned here, one would consider the fact that a person's name isn't likely to change, but their weight is.

Initializing a record with mutable fields isn't different from a regular record initialization. let john = { name = "John"; weight = 115 };;

You can use BETWEEN clause to replace a combination of "greater than equal AND less than equal" conditions. Data +----+-----------+ | id | username | +----+-----------+ | 1 | admin | | 2 | root | | 3 | toor | | 4 | mysql | | 5 | thanks | | 6 | java ...

Starting with version 2.7 ElementTree has a better support for XPath queries. XPath is a syntax to enable you to navigate through an xml like SQL is used to search through a database. Both find and findall functions support XPath. The xml below will be used for this example <Catalog> &l...

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navigator.mediaDevices is the common method adapted in Chrome and FF to getUserMedia as of now. A promised based call back which returns local stream on success navigator.mediaDevices.getUserMedia({ audio: true, video: true }) .then(stream => { // attach this stream to window obje...