Tutorial by Examples: w

extern crate gtk; use gtk::prelude::*; use gtk::{Window, WindowType, Label, Entry, Box as GtkBox, Orientation}; fn main() { if gtk::init().is_err() { println!("Failed to initialize GTK."); return; } let window = Window::new(WindowType::Toplevel); ...

IF A = 1 OR 2 THEN perform miracles END-IF IF A = 1 OR 2 AND B = 1 THEN perform rites-of-passage ELSE perform song-and-dance END-IF IF statements can be terminated with full stop or explicit scope terminator END-IF. Use of periods for scope termination is no longer recommend...

Errors, when managed properly by the server, will be returned to your client with a specific HTTP status code different from 2xx (see RFC 2616 section 10). It's advised to catch globally your errors from your $.ajaxSetup() as demonstrated in the example below. Therefore all errors coming from your ...

A closure is a procedure that holds internal state: Define a procedure that returns a closure The procedure make-an-adder takes one argument x and returns a function that closes over the value. Or to put it another way, x is within the lexical scope of the returned function. #lang racket (define...

Prepared statements See Prepared statements in MySQLi for how to prepare and execute a query. Binding of results Object-oriented style $stmt->bind_result($forename); Procedural style mysqli_stmt_bind_result($stmt, $forename); The problem with using bind_result is that it requires the s...

Often one wants to intermittently run one or more validation batches during the course of training a deep network. Typically the training data are fed by a queue while the validation data might be passed through the feed_dict parameter in sess.run(). tf.placeholder_with_default() is designed to work...

From Odata.org OData (Open Data Protocol) is an OASIS standard that defines the best practice for building and consuming RESTful APIs. OData helps you focus on your business logic while building RESTful APIs without having to worry about the approaches to define request and response headers, ...

A common approach to get the top most UIViewController is to get the RootViewController of your active UIWindow. I wrote an extension for this: extension UIApplication { func topViewController(_ base: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController ...

First, install fs and path in your project npm install --save fs path Add the following code to your app.js file: var express = require('express') var fs = require('fs') var morgan = require('morgan') var path = require('path') var app = express() // create a write stream (in append mo...

First, install fs, file-stream-rotator and path in your project npm install --save fs file-stream-rotator path Add the following code to your app.js file: var FileStreamRotator = require('file-stream-rotator') var express = require('express') var fs = require('fs') var morgan = require('morg...

To understand this example, it is recommended to have a brief idea on Bellman-Ford single source shortest path algorithm which can be found here In Bellman-Ford algorithm, to find out the shortest path, we need to relax all the edges of the graph. This process is repeated at most (V-1) times, where...

Write all events with level: debug, info, warn, error and fatal to one file: <?xml version="1.0" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <targets> &lt...

Create one log file for each day. The log files will have the following names (dependent of culture) 2016-06-05.log 2016-06-06.log 2016-06-07.log ... <?xml version="1.0" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://w...

declare is an internal command of bash. (internal command use help for displaying "manpage"). It is used to show and define variables or show function bodies. Syntax: declare [options] [name[=value]]... # options are used to define # an integer declare -i myInteger declare -i another...

Here is an example of a basic page using the Materialize CSS framework which incorporates the grid system and materialboxed. <!DOCTYPE html> <html> <head> <title>Materializecss Example webpage</title> <!--Import Google Icon Font--> <link href="ht...

Descriptor objects can allow related object attributes to react to changes automatically. Suppose we want to model an oscillator with a given frequency (in Hertz) and period (in seconds). When we update the frequency we want the period to update, and when we update the period we want the frequency ...

use std::ops::Deref; use std::fmt::Debug; #[derive(Debug)] struct RichOption<T>(Option<T>); // wrapper struct impl<T> Deref for RichOption<T> { type Target = Option<T>; // Our wrapper struct will coerce into Option fn deref(&self) -> &Option...

After the record gets stored in the database, we want to inspect what was changed on the record. We'll do this inspection by comparing values between the old and new record instances. // 1.0, Revealing Module pattern var myNamespace = myNamespace || {}; myNamespace.example = (function () { ...

XPath selectors can be used to select elements with specific attributes, such as class, id, title etc. By Class View: <div class="HakunaMatata"> Hakuna Matata </div> Code: var theLionKing= element(by.xpath('//div[@class="HakunaMatata"]')); expect(theLionKing.g...

using System; [assembly:CLSCompliant(true)] namespace CLSDoc { public class Cat { internal UInt16 _age = 0; private UInt16 _daysTillVacination = 0; //Warning CS3003 Type of 'Cat.DaysTillVacination' is not CLS-compliant protected UInt16 DaysT...