XML
<Galaxy>
<Light>sun</Light>
<Device>satellite</Device>
<Sensor>human</Sensor>
<Name>Milky Way</Name>
</Galaxy>
XPATH
/Galaxy/*[local-name()='Light' or local-name()='Device' or local-name()='Sensor']
or
//*[...
This example uses Parallel.ForEach to calculate the sum of the numbers between 1 and 10000 by using multiple threads. To achieve thread-safety, Interlocked.Add is used to sum the numbers.
using System.Threading;
int Foo()
{
int total = 0;
var numbers = Enumerable.Range(1, 10000).ToLis...
This example uses Parallel.For to calculate the sum of the numbers between 1 and 10000 by using multiple threads. To achieve thread-safety, Interlocked.Add is used to sum the numbers.
using System.Threading;
int Foo()
{
int total = 0;
Parallel.For(1, 10001,
() => 0, // in...
Using Code Contracts it is possible to apply a contract to an interface. This is done by declaring an abstract class that implments the interfaces. The interface should be tagged with the ContractClassAttribute and the contract definition (the abstract class) should be tagged with the ContractClas...
(Select, one-to-one)
As with ActionBlock, TransformBlock<TInput, TOutput> enables the execution of a delegate to perform some action for each input datum; unlike with ActionBlock, this processing has an output. This delegate can be a Func<TInput, TOutput>, in which case processing of t...
(SelectMany, 1-m: The results of this mapping are “flattened”, just like LINQ’s SelectMany)
TransformManyBlock<TInput, TOutput> is very similar to TransformBlock<TInput, TOutput>.
The key difference is that whereas a TransformBlock<TInput, TOutput> produces one and only one outpu...
If we try to change an object on the UI thread from a different thread we will get a cross-thread operation exception:
Private Sub Button_Click(sender As Object, e As EventArgs) Handles MyButton.Click
' Cross thread-operation exception as the assignment is executed on a different thread
'...
Basic HTTP calls don't provide code-reusability, however. And they can get confused with all the other features you're trying to implement. For those reasons, it's common to implement an API wrapper.
Foo = {
identify: function(input){
return Http.get('http://foo.net/api/identify/' + input...
After creating an API wrapper, it's likely that you may want to create an Atmosphere package to redistribute it and share it between applications. The files of your package will probably look something like this.
packages/foo-api-wrapper/package.js
packages/foo-api-wrapper/readme.md
packages/foo-...
We can also use macros for making code easier to read and write. For example we can implement macros for implementing the foreach construct in C for some data structures like singly- and doubly-linked lists, queues, etc.
Here is a small example.
#include <stdio.h>
#include <stdlib.h>...
As well as being able to create an array by filtering out nil from the transformed elements of a sequence, there is also a version of flatMap(_:) that expects the transformation closure to return a sequence S.
extension SequenceType {
public func flatMap<S : SequenceType>(transform: (Sel...
4.0
Instead of the ForEach-Object cmdlet, the here is also the possibility to use a ForEach method directly on object arrays like so
(1..10).ForEach({$_ * $_})
or - if desired - the parentheses around the script block can be omitted
(1..10).ForEach{$_ * $_}
Both will result in the output ...
There are hundreds of settings that can be placed in my.cnf. For the 'lite' user of MySQL, they won't matter as much.
Once your database becomes non-trivial, it is advisable to set the following parameters:
innodb_buffer_pool_size
This should be set to about 70% of available RAM (if you have a...
section .data
msg db "Hello world!",10 ; 10 is the ASCII code for a new line (LF)
section .text
global _start
_start:
mov rax, 1
mov rdi, 1
mov rsi, msg
mov rdx, 13
syscall
mov rax, 60
mov rdi, 0
syscall
If you want to e...
In order to check whether a value is NaN, isnull() or notnull() functions can be used.
In [1]: import numpy as np
In [2]: import pandas as pd
In [3]: ser = pd.Series([1, 2, np.nan, 4])
In [4]: pd.isnull(ser)
Out[4]:
0 False
1 False
2 True
3 False
dtype: bool
Note that n...
Create custom class for calling multipart/form-data HttpURLConnection request
MultipartUtility.java
public class MultipartUtility {
private final String boundary;
private static final String LINE_FEED = "\r\n";
private HttpURLConnection httpConn;
priva...
