The first step in optimizing for speed is finding the slowest sections of code. The Timer VBA function returns the number of seconds elapsed since midnight with a precision of 1/256th of a second (3.90625 milliseconds) on Windows based PCs. The VBA functions Now and Time are only accurate to a secon...
std::sort, found in the standard library header algorithm, is a standard library algorithm for sorting a range of values, defined by a pair of iterators. std::sort takes as the last parameter a functor used to compare two values; this is how it determines the order. Note that std::sort is not stable...
Detailed instructions on getting openerp set up or installed in Debian/Ubuntu.
To install from source code, we need Python 2.7, Git and a PostgreSQL database:
$ sudo apt-get install git python-pip python2.7-dev -y
$ sudo apt-get install postgresql -y
$ sudo su -c "createuser -s $(whoami)&qu...
6.0
Since C# 6.0 it is possible to use string interpolation in place of String.Format.
string name = "John";
string lastname = "Doe";
Console.WriteLine($"Hello {name} {lastname}!");
Hello John Doe!
More examples for this under the topic C# 6.0 features: Stri...
Imagine the following XML:
<root>
<element>hello</element>
<another>
hello
</another>
<example>Hello, <nested> I am an example </nested>.</example>
</root>
The following XPath expression:
//*[text() = 'hel...
The static method Date.now returns the number of milliseconds that have elapsed since 1 January 1970 00:00:00 UTC. To get the number of milliseconds that have elapsed since that time using an instance of a Date object, use its getTime method.
// get milliseconds using static method now of Date
co...
In a Service Provider register method we can bind an interface to an implementation:
public function register()
{
App::bind( UserRepositoryInterface::class, EloquentUserRepository::class );
}
From now on, everytime the app will need an instance of UserRepositoryInterface, Larave...
We can use the Service Container as a Registry by binding an instance of an object in it and get it back when we'll need it:
// Create an instance.
$john = new User('John');
// Bind it to the service container.
App::instance('the-user', $john);
// ...somewhere and/or in another class...
...
We can bind a class as a Singleton:
public function register()
{
App::singleton('my-database', function()
{
return new Database();
});
}
This way, the first time an instance of 'my-database' will be requested to the service container, a new instance will be created. Al...
from pandas_datareader import data
# Only get the adjusted close.
aapl = data.DataReader("AAPL",
start='2015-1-1',
end='2015-12-31',
data_source='yahoo')['Adj Close']
>>> aapl.plot(title='AAPL Adj. C...
The default namespace is the namespace corresponding to the absence of any prefix. It can be declared with the special xmlns attribute.
<?xml version="1.0"?>
<foo xmlns="http://www.example.com/my-namespace">
<!-- the element foo is in the namespace
htt...
A namespace binding (special xmlns or xmlns:... attribute) is in scope for all the descendants of the enclosing element, including this element.
<?xml version="1.0"?>
<root>
<my:element xmlns:my="http://www.example.com/ns1">
<!-- here, the prefix my...
To cancel a call to requestAnimationFrame, you need the id it returned from when it was last called. This is the parameter you use for cancelAnimationFrame. The following example starts some hypothetical animation then pauses it after one second.
// stores the id returned from each call to reques...
Create project using STS (Spring Starter Project) or Spring Initializr (at https://start.spring.io ).
Add a Web Dependency in your pom.xml:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId&...
1) Use ng-repeat sparingly
Using ng-repeat in views generally results in poor performance, particularly when there are nested ng-repeat's.
This is super slow!
<div ng-repeat="user in userCollection">
<div ng-repeat="details in user">
{{details}}
</div...
First define the service (in this case it uses the factory pattern):
.factory('dataService', function() {
var dataObject = {};
var service = {
// define the getter method
get data() {
return dataObject;
},
// define the setter method
...
When running from the CLI, PHP exhibits some different behaviours than when run from a web server. These differences should be kept in mind, especially in the case where the same script might be run from both environments.
No directory change When running a script from a web server, the current w...
Access ModifierVisibilityInheritancePrivateClass onlyCan't be inheritedNo modifier / PackageIn packageAvailable if subclass in packageProtectedIn packageAvailable in subclassPublicEverywhereAvailable in subclass
There was once a private protected (both keywords at once) modifier that could be appli...
Here is how to make a Heads Up Notification for capable devices, and use a Ticker for older devices.
// Tapping the Notification will open up MainActivity
Intent i = new Intent(this, MainActivity.class);
// an action to use later
// defined as an app constant:
// public static final String ME...
