Tutorial by Examples: g

Now you can start writing your own go code with auto-completion using Atom and Gulp: package main import ( "fmt" "mypackage" ) func main() { println("4! = ", mypackage.Factorial(4)) }
Floating point literals provide values that can be used where you need a float or double instance. There are three kinds of floating point literal. Simple decimal forms Scaled decimal forms Hexadecimal forms (The JLS syntax rules combine the two decimal forms into a single form. We treat t...
Throwing error means exception if any exception is not handled then the node server will crash. The following line throws error: throw new Error("Some error occurred"); or var err = new Error("Some error occurred"); throw err; or throw "Some error occurred";...
Eclipse does not give you the possibility to change the font size of the views like 'Project Explorer' or 'Servers', which looks ugly on Linux since Eclipse uses the default (desktop) font size. But you can edit specific configuration files to get the proper font sizes. To fix this annoying font si...
Note 1: You need some prior knowledge about java servlet page(JSP) and Apache Maven before you start this examples. Start the web server (like Apache tomcat) with existing web project or create one. Visit the index.jsp. Anybody can access that page, it's insecure! Securing application ...
We will create a simple "Hello World!" app with Angular2 2.4.1 (@NgModule change) with a node.js (expressjs) backend. Prerequisites Node.js v4.x.x or higher npm v3.x.x or higher or yarn Then run npm install -g typescript or yarn global add typescriptto install typescript globally ...
There are some general Future trait implementations in the futures crate. One of them is implemented in futures::sync::oneshot module and is available through futures::oneshot function: extern crate futures; use std::thread; use futures::Future; fn expensive_computation() -> u32 { //...
//the path of the file string filePath = "C:\\ExcelDemo.xlsx"; //or if you use asp.net, get the relative path filePath = Server.MapPath("ExcelDemo.xlsx"); //create a fileinfo object of an excel file on the disk FileInfo file = new FileInfo(filePath); //create a new Ex...
// +build linux package lib var OnlyAccessibleInLinux int // Will only be compiled in Linux Negate a platform by placing ! before it: // +build !windows package lib var NotWindows int // Will be compiled in all platforms but not Windows List of platforms can be specified by separa...
Different platforms can have separate implementations of the same method. This example also illustrates how build tags and file suffixes can be used together. File main.go: package main import "fmt" func main() { fmt.Println("Hello World from Conditional Compilation Doc!&...
Requirements: You need PHP >= 5.6.4 and Composer installed on your machine. You can check version of both by using command: For PHP: php -v Output like this: PHP 7.0.9 (cli) (built: Aug 26 2016 06:17:04) ( NTS ) Copyright (c) 1997-2016 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998...
Create a file ckeditor-content.html with the following content: <!DOCTYPE html> <html> <head> <title>CKEditor Get Content Demo!</title> </head> <body> <script src="//cdn.ckeditor.com/4.6.1/basic/ckeditor.js"></script> ...
Enumerating through Keys foreach ($key in $var1.Keys) { $value = $var1[$key] # or $value = $var1.$key } Enumerating through Key-Value Pairs foreach ($keyvaluepair in $var1.GetEnumerator()) { $key1 = $_.Key1 $val1 = $_.Val1 }
It's a good practice to scope patches using Refinements, but sometimes it's nice to load it globally (for example in development, or testing). Say for example you want to start a console, require your library, and then have the patched methods available in the global scope. You couldn't do this wit...
struct Mathematics { internal func performOperation(inputArray: [Int], operation: (Int)-> Int)-> [Int] { var processedArray = [Int]() for item in inputArray { processedArray.append(operation(item)) } retur...
func multiply2(item: Int)-> Int { return (item + 2) } let multiply2ToMe = multiply2 // passing the function directly to the function as param print(math.performOperation(inputArray: arrayToBeProcessed, operation: multiply2ToMe)) Output: [3, 5, 7, 9, 11, 13, 10, 8, 6, 4, 102] ...
The code below shows how to perform asynchronous navigation when the app is in a MasterDetailPage context. public async Task NavigateMasterDetail(Page page) { if (page == null) { return; } var masterDetail = App.Current.MainPage as Mas...
The following will produce a PNG image in the current directory of the loaded page. chrome --headless --screenshot https://stackoverflow.com
Using the --remote-debugging-port to expose a debugger accessible over HTTP is one way appliances can connect and interact with the document using the Chrome Debugging Protocol. chrome --headless --remote-debugging-port=9222 https://stackoverflow.com You can then navigate to http://localhost:9222 ...
Using srcset with sizes <img sizes="(min-width: 1200px) 580px, (min-width: 640px) 48vw, 98vw" srcset="img/hello-300.jpg 300w, img/hello-600.jpg 600w, img/hello-900.jpg 900w, img/hello-1200.jpg 1200w" src="img/hello-900.jpg&quo...

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