XML elements often nest, have data in attributes and/or as character data. The way to capture this data is by using ,attr and ,chardata respectively for those cases.
var doc = `
<parent>
<child1 attr1="attribute one"/>
<child2>and some cdata</child2>
</p...
Pointer Methods
Pointer methods can be called even if the variable is itself not a pointer.
According to the Go Spec,
. . . a reference to a non-interface method with a pointer receiver using an addressable value will automatically take the address of that value: t.Mp is equivalent to (&t)....
Channels are often used to implement timeouts.
func main() {
// Create a buffered channel to prevent a goroutine leak. The buffer
// ensures that the goroutine below can eventually terminate, even if
// the timeout is met. Without the buffer, the send on the channel
// blocks fo...
You can mix normal parameters and parameter arrays:
public class LotteryTicket : IEnumerable{
public int[] LuckyNumbers;
public string UserName;
public void Add(string userName, params int[] luckyNumbers){
UserName = userName;
Lottery = luckyNumbers;
}
}
...
The goal is to generate the following XML document:
<FruitBasket xmlns="http://www.fruitauthority.fake">
<Fruit ID="F0001">
<FruitName>Banana</FruitName>
<FruitColor>Yellow</FruitColor>
</Fruit>
<Fruit ID="F000...
Helpful when you want to grab a copy of a production database to play around with locally.
mongodump --host some-mongo-host.com:1234 -d DATABASE_NAME -u DATABASE_USER -p DATABASE_PASSWORD This will create a local dump directory; within that directory you'll see a directory with your DATABASE_NAME...
Set the MONGO_URL environment variable before starting your local Meteor app.
Linux/MacOS Example:
MONGO_URL="mongodb://some-mongo-host.com:1234/mydatabase" meteor
or
export MONGO_URL="mongodb://some-mongo-host.com:1234/mydatabase"
meteor
Windows Example
Note: don't u...
Matplotlib axes are two-dimensional by default. In order to create three-dimensional plots, we need to import the Axes3D class from the mplot3d toolkit, that will enable a new kind of projection for an axes, namely '3d':
import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D
fi...
If you want two or more arguments to be mutually exclusive. You can use the function argparse.ArgumentParser.add_mutually_exclusive_group(). In the example below, either foo or bar can exist but not both at the same time.
import argparse
parser = argparse.ArgumentParser()
group = parser.add_mut...
Create a DataFrame from multiple lists by passing a dict whose values lists. The keys of the dictionary are used as column labels. The lists can also be ndarrays. The lists/ndarrays must all be the same length.
import pandas as pd
# Create DF from dict of lists/ndarrays
df = pd.DataFrame({'...
Function level annotations help IDEs identify return values or potentially dangerous code
/**
* Adds two numbers together.
*
* @param Int $a First parameter to add
* @param Int $b Second parameter to add
* @return Int
*/
function sum($a, $b)
{
return (int) $a + $b;
}
/**
* ...
File level metadata applies to all the code within the file and should be placed at the top of the file:
<?php
/**
* @author John Doe ([email protected])
* @copyright MIT
*/
If a class extends another class and would use the same metadata, providing it @inheritDoc is a simple way for use the same documentation. If multiple classes inherit from a base, only the base would need to be changed for the children to be affected.
abstract class FooBase
{
/**
* @par...
The dexcount plugin counts methods and class resource count after a successful build.
Add the plugin in the app/build.gradle:
apply plugin: 'com.android.application'
buildscript {
repositories {
mavenCentral() // or jcenter()
}
dependencies {
classpath 'com.ge...
Html5-Canvas ...
Is an Html5 element.
Is supported in most modern browsers (Internet Explorer 9+).
Is a visible element that is transparent by default
Has a default width of 300px and a default height of 150px.
Requires JavaScript because all content must be programmatically added to the Canv...
The URLRequestMethod class contains constants for the various request types you can make. These constants are to be allocated to URLRequest's method property:
var request:URLRequest = new URLRequest('http://someservice.com');
request.method = URLRequestMethod.POST;
Note that only GET and POST...
When Flash makes a request for data from an external source, that operation is asynchronous. The most basic explanation of what this means is that the data loads "in the background" and triggers the event handler you allocate to Event.COMPLETE when it is received. This can happen at any po...
