There is overflow in the following code
int x = int.MaxValue;
Console.WriteLine(x + x + 1L); //prints -1
Whereas in the following code there is no overflow
int x = int.MaxValue;
Console.WriteLine(x + 1L + x); //prints 4294967295
This is due to the left-to-right ordering of the operations...
Command line arguments parsing is Go is very similar to other languages. In you code you just access slice of arguments where first argument will be the name of program itself.
Quick example:
package main
import (
"fmt"
"os"
)
func main() {
progName := o...
Go standard library provides package flag that helps with parsing flags passed to program.
Note that flag package doesn't provide usual GNU-style flags. That means that multi-letter flags must be started with single hyphen like this:
-exampleflag , not this: --exampleflag. GNU-style flags can be d...
Throughout the topics and examples here we'll see many declarations of variables, functions and so on.
As well as their name, data objects may have attributes. Covered in this topic are declaration statements like
integer, parameter :: single_kind = kind(1.)
which gives the object single_kind...
Using the document-ready event can have small performance drawbacks, with delayed execution of up to ~300ms. Sometimes the same behavior can be achieved by execution of code just before the closing </body> tag:
<body>
<span id="greeting"></span> world!
<sc...
You can create a task (Console Command) in Laravel using Artisan. From your command line:
php artisan make:console MyTaskName
This creates the file in app/Console/Commands/MyTaskName.php. It will look like this:
<?php
namespace App\Console\Commands;
use Illuminate\Console\Command;
c...
You can make a task available to Artisan and to your application in the app/Console/Kernel.php file.
The Kernel class contains an array named $commands which make your commands available to your application.
Add your command to this array, in order to make it available to Artisan and your applicat...
When your command is made available to your application, you can use Laravel to schedule it to run at pre-defined intervals, just like you would a CRON.
In The app/Console/Kernel.php file you will find a schedule method that you can use to schedule your task.
<?php
namespace App\Console;
...
The easiest method to bypass cache is to change the URL. This is used as a best practice when the URL contains a version or a checksum of the resource, e.g.
http://example.com/image.png?version=1
http://example.com/image.png?version=2
These two URLs will be cached separately, so even if …?versi...
This example displays a transaction for an image view with only two images.(can use more images as well one after the other for the first and second layer positions after each transaction as a loop)
add a image array to res/values/arrays.xml
<resources>
<array
name=&...
It is common for an AsyncTask to require a reference to the Activity that called it.
If the AsyncTask is an inner class of the Activity, then you can reference it and any member variables/methods directly.
If, however, the AsyncTask is not an inner class of the Activity, you will need to pass an A...
If your team is following a rebase-based workflow, it may be a advantageous to setup git so that each newly created branch will perform a rebase operation, instead of a merge operation, during a git pull.
To setup every new branch to automatically rebase, add the following to your .gitconfig or .gi...
Copy foo.txt from /path/to/source/ to /path/to/target/folder/
cp /path/to/source/foo.txt /path/to/target/folder/
Copy foo.txt from /path/to/source/ to /path/to/target/folder/ into a file called bar.txt
cp /path/to/source/foo.txt /path/to/target/folder/bar.txt
To change the URL of the repository you want your remote to point to, you can use the set-url option, like so:
git remote set-url <remote_name> <remote_repository_url>
Example:
git remote set-url heroku https://git.heroku.com/fictional-remote-repository.git
Express is based on Connect, which is what provides the middleware functionality of Express. To understand what connect is, you can see that it provides the basic app structure that you use when you use express
const connect = require('connect')
const app = connect()
app.listen(3000)
This wi...
Middleware are attached to the app object, usually before listen is called. Example of a simple logging middleware:
app.use(function (req, res, next) {
console.log(`${req.method}: ${req.url}`)
next()
})
All this will do is log GET: /example if you where to GET localhost:3000/example. ...
