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How does Access-Control-Allow-Origin header work?
...ld serve its pages with the response header:
Access-Control-Allow-Origin: http://siteA.com
Modern browsers will not block cross-domain requests outright. If Site A requests a page from Site B, the browser will actually fetch the requested page on the network level and check if the response heade...
Difference between Property and Field in C# 3.0+
... in several ways. For example:
class Person: IPerson
{
private string _name;
public string FirstName
{
get
{
return _name ?? string.Empty;
}
set
{
if (value == null)
throw new System.ArgumentNullException("v...
How do I pass multiple parameters into a function in PowerShell?
...ameter(Mandatory=$true, Position=0)]
[ValidateScript({ Test-Path $_ -PathType 'Leaf' })]
[ValidateScript({ (Get-Item $_ | select -Expand Extension) -eq ".csv" })]
[string] $Path
)
}
In this example, we are assured not only that $Path exists, but that it is a file, (a...
What text editor is available in Heroku bash shell? [closed]
...a heroku cli plugin.
Just install:
heroku plugins:install https://github.com/naaman/heroku-vim
And use:
heroku vim
The heroku vim command will drop you into a bash shell with vim installed on your $PATH. All you have to do is retrain your fingers to type heroku vim instead of heroku run bash.
...
Get protocol + host name from URL
...o app, I need to get the host name from the referrer in request.META.get('HTTP_REFERER') along with its protocol so that from URLs like:
...
What are the main performance differences between varchar and nvarchar SQL Server data types?
... using 3 letter codes. And consider using a binary Collation such as Latin1_General_100_BIN2.
If storing postal codes (i.e. zip codes), use VARCHAR since it is an international standard to never use any letter outside of A-Z. And yes, still use VARCHAR even if only storing US zip codes and not INT s...
C++ templates that accept only certain types
...t, T>::value)); //Yes, the double parentheses are needed, otherwise the comma will be seen as macro argument separator
...
};
In some other, simpler cases, you can simply forward-declare a global template, but only define (explicitly or partially specialise) it for the valid types:
templat...
Add new value to an existing array in JavaScript [duplicate]
...
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Checkbox for nullable boolean
... to be given to the radio button field
var id = string.Format("{0}_{1}", metaData.PropertyName, item.Value);
// Create and populate a radio button using the existing html helpers
var label = htmlHelper.Label(id, HttpUtility.HtmlEncode(item.Text));
var radio = Stri...
Compression/Decompression string with C#
I am newbie in .net. I am doing compression and decompression string in C#. There is a XML and I am converting in string and after that I am doing compression and decompression.There is no compilation error in my code except when I decompression my code and return my string, its returning only half ...