The cx and cy values designate the location of the center of the circle.
The r attribute specifies the size of the radius of the circle.
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<circle cx="40" cy="40&q...
Create a directory called ansible-helloworld-playbook
mkdir ansible-helloworld-playbook
Create a file hosts and add remote systems how want to manage. As ansible relies on ssh to connect the machines, you should make sure they are already accessible to you in ssh from your computer.
192.168.1.1...
To increment date objects in Javascript, we can usually do this:
var checkoutDate = new Date(); // Thu Jul 21 2016 10:05:13 GMT-0400 (EDT)
checkoutDate.setDate( checkoutDate.getDate() + 1 );
console.log(checkoutDate); // Fri Jul 22 2016 10:05:13 GMT-0400 (EDT)
It is possible to use setD...
Method references allow predefined static or instance methods that adhere to a compatible functional interface to be passed as arguments instead of an anonymous lambda expression.
Assume that we have a model:
class Person {
private final String name;
private final String surname;
...
Carousel components can be instantiated via jQuery with the function $('.carousel').carousel(options), where $('.carousel') is a top-level reference to the specific carousel and options is a Javascript object specifying the carousel's default attributes.
The options object allows for multiple prope...
Generally you should avoid using the default database role (often postgres) in your application. You should instead create a user with lower levels of privileges. Here we make one called niceusername and give it a password very-strong-password
CREATE ROLE niceusername with PASSWORD 'very-strong-pas...
The arc4random_uniform() function is the simplest way to get high-quality random integers. As per the manual:
arc4random_uniform(upper_bound) will return a uniformly distributed random number less than upper_bound.
arc4random_uniform() is recommended over constructions like ''arc4random() % uppe...
The following code demonstrates usage of arc4random_uniform() to generate a random integer between 3 and 12:
uint32_t randomIntegerWithinRange = arc4random_uniform(10) + 3; // A random integer between 3 and 12
This works to create a range because arc4random_uniform(10) returns an integer between...
hash( (1, 2) ) # ok
hash( ([], {"hello"}) # not ok, since lists and sets are not hashabe
Thus a tuple can be put inside a set or as a key in a dict only if each of its elements can.
{ (1, 2) } # ok
{ ([], {"hello"}) ) # not ok
One of the most common use of Sed is text substitution that can be achieved with the s command.
In a terminal, type echo "Hello sed" | sed 's/sed/World/' and press Enter:
$ echo "Hello sed" | sed 's/sed/World/'
Hello World
"Hello World" should be output to the ter...
C# allows user-defined types to control assignment and casting through the use of the explicit and implicit keywords. The signature of the method takes the form:
public static <implicit/explicit> operator <ResultingType>(<SourceType> myType)
The method cannot take any more argu...
Command:
adb devices
Result example:
List of devices attached
emulator-5554 device
PhoneRT45Fr54 offline
123.454.67.45 no device
First column - device serial number
Second column - connection status
Android documentation
Enter these commands in Android device Terminal
su
setprop service.adb.tcp.port 5555
stop adbd
start adbd
After this, you can use CMD and ADB to connect using the following command
adb connect 192.168.0.101.5555
And you can disable it and return ADB to listening on USB with
setprop servi...
To generate random permutation of 5 numbers:
sample(5)
# [1] 4 5 3 1 2
To generate random permutation of any vector:
sample(10:15)
# [1] 11 15 12 10 14 13
One could also use the package pracma
randperm(a, k)
# Generates one random permutation of k of the elements a, if a is a vector,
# ...
Here is an example of a method that would live inside a SQLiteOpenHelper subclass. It uses the searchTerm String to filter the results, iterates through the Cursor's contents, and returns those contents in a List of Product Objects.
First, define the Product POJO class that will be the container f...
There is also an option to dynamically request components. You can do it using the $injector service:
myModule.controller('myController', ['$injector', function($injector) {
var myService = $injector.get('myService');
}]);
Note: while this method could be used to prevent the circular depen...
To start with multi-threading, you would need the pthreads-ext for php, which can be installed by
$ pecl install pthreads
and adding the entry to php.ini.
A simple example:
<?php
// NOTE: Code uses PHP7 semantics.
class MyThread extends Thread {
/**
* @var string
* Variab...
Any class can configure its own string formatting syntax through the __format__ method. A type in the standard Python library that makes handy use of this is the datetime type, where one can use strftime-like formatting codes directly within str.format:
>>> from datetime import datetime
&...
