Tutorial by Examples: g

int highScore = 57; NSString *scoreBoard = [NSString stringWithFormat:@"HighScore: %i", (int)highScore]; NSLog(scoreBoard);//logs "HighScore: 57"

# Get two numbers from STDIN, separated by a newline, and output the result number1 = gets number2 = gets puts number1.to_i + number2.to_i ## run with: $ ruby a_plus_b.rb ## or: $ echo -e "1\n2" | ruby a_plus_b.rb

number1 = ARGV[0] number2 = ARGV[1] puts number1.to_i + number2.to_i ## run with: $ ruby a_plus_b.rb 1 2

After installing the SDK, atlas-run-standalone starts a JIRA instance with the latest released version. atlas-run-standalone --product jira The instance is available http://localhost:2990/jira The created instance is for testing only. It provides an other directory structure as production insta...

Let's say we want to use libc's ntohl function. First, we must load libc.so: >>> from ctypes import * >>> libc = cdll.LoadLibrary('libc.so.6') >>> libc <CDLL 'libc.so.6', handle baadf00d at 0xdeadbeef> Then, we get the function object: >>> ntohl = l...

In some cases, a C function accepts a function pointer. As avid ctypes users, we would like to use those functions, and even pass python function as arguments. Let's define a function: >>> def max(x, y): return x if x >= y else y Now, that function takes two arguments and r...

Let's combine all of the examples above into one complex scenario: using libc's lfind function. For more details about the function, read the man page. I urge you to read it before going on. First, we'll define the proper prototypes: >>> compar_proto = CFUNCTYPE(c_int, POINTER(c_int), PO...

One of the simpler ways of implementing an authorization system is using the flask-login extension. The project's website contains a detailed and well-written quickstart, a shorter version of which is available in this example. General idea The extension exposes a set of functions used for: log...

Any declaration (variable, const, function, class, etc.) can be exported from module to be imported in other module. Typescript offer two export types: named and default. Named export // adams.ts export function hello(name: string){ console.log(`Hello ${name}!`); } export const answerToLi...

Feature: Some terse yet descriptive text of what is desired Textual description of the business value of this feature Business rules that govern the scope of the feature Any additional information that will make the feature easier to understand Background: Given some precon...

Generate a random letter between a and z by using the Next() overload for a given range of numbers, then converting the resulting int to a char Random rnd = new Random(); char randomChar = (char)rnd.Next('a','z'); //'a' and 'z' are interpreted as ints for parameters for Next()

Add this text to appsettings.json { "key1": "value1", "key2": 2, "subsectionKey": { "suboption1": "subvalue1" } } Now you can use this configuration in your app, in the way like this public class Program { sta...

Create class like a class below public class MyOptions { public MyOptions() { // Set default value, if you need it. Key1 = "value1_from_ctor"; } public string Key1 { get; set; } public int Key2 { get; set; } } Then you need to add this code ...

This used the flex layout with the sortable to create a grid of responsive boxes that can be moved around by dragging and dropping. HTML <div id="sortable"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div&gt...

This example uses a class on the placeholder to turn it into a line and make it take up no room. HTML <div id="sortable"> <div>1</div> <div>2</div> <div>3</div> <div>4</div> </div> JS $("#sortable&q...

Based on a question. The following snippets Does not cache the expected emission and prevents further calls. Instead it re-subscribes to the realSource for every subscription. var state = 5 var realSource = Rx.Observable.create(observer => { console.log("creating expensive HTTP-based emis...

#include <string.h> #include <gst/gst.h> #include <gst/app/gstappsrc.h> /* * an example application of using appsrc in push mode to create a file. * from buffers we push into the pipeline. */ /* S16LE 10ms frame audio */ #define BUFFER_SIZE 160 /* 300 frames =...

1. Scrolling to target element ("BROWSE TEMPLATES" button at the bottom of page) with Actions from selenium import webdriver from selenium.webdriver.common.action_chains import ActionChains driver = webdriver.Chrome() driver.get('http://www.w3schools.com/') target = driver.find_elem...

You would need to install ruby before you can install rails. Mac already comes with ruby installed based on how recent your macOS is? Depending on what ruby version you want for your development, the best way to install Ruby is to use RVM. In your terminal, type the command below listed in step...

<?php function wpshout_register_widgets() { register_widget( 'Favorite_Song_Widget'); } add_action( 'widgets_init', 'wpshout_register_widgets' ); class Favorite_Song_Widget extends WP_Widget { function Favorite_Song_Widget() { // Instantiate the parent object parent:...