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In WPF, what are the differences between the x:Name and Name attributes?
...erence
WPF defines a CLR attribute that is consumed by XAML processors in order to map multiple CLR namespaces to a single XML namespace. The XmlnsDefinitionAttribute attribute is placed at the assembly level in the source code that produces the assembly. The WPF assembly source code uses this attr...
req.query and req.param in ExpressJS
...)
req.param("") works as following
Lookup is performed in the following order:
req.params
req.body
req.query
Direct access to req.body, req.params, and req.query should be favoured for clarity - unless you truly accept input from each object.
Ref:http://expressjs.com/4x/api.html#req.param
...
C# generic type constraint for everything nullable
...valent to OR in generics. However I can propose to use default key word in order to create null for nullable types and 0 value for structures:
public class Foo<T>
{
private T item;
public bool IsNullOrDefault()
{
return Equals(item, default(T));
}
}
You could also i...
while (1) Vs. for (;;) Is there a speed difference?
...be permitted to speed up your code under the as-if rule, for example by re-ordering independent statements. Compilers in fact do exactly that. But my copy of the standard is way upstairs.
– Steve Jessop
Sep 4 '09 at 14:07
...
When to catch java.lang.Error?
...
Very rarely.
I'd say only at the top level of a thread in order to ATTEMPT to issue a message with the reason for a thread dying.
If you are in a framework that does this sort of thing for you, leave it to the framework.
...
How do I output coloured text to a Linux terminal?
...thers have stated, you can use escape characters.
You can use my header in order to make it easier:
#ifndef _COLORS_
#define _COLORS_
/* FOREGROUND */
#define RST "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
#define KYEL "\x1B[33m"
#define KBLU "\x1B[34m"
#define KMAG "\x1B[35m"...
What's a good way to extend Error in JavaScript?
...not apply the function, because functions are created first, no matter the order. Thus, you can move the function to the end of the file, without a problem.
Browser Compatibility
Works in Firefox and Chrome (and Node.JS) and fills all promises.
Internet Explorer fails in the following
Errors do...
Catch an exception thrown by an async void method
...hod begins waiting for the async result. It's insightful to use tracing in order to investigate how the code is actually behaving.
The code below does the following:
Create 4 tasks
Each task will asynchronously increment a number and return the incremented number
When the async result has arrived...
How can I brew link a specific version?
...ds:
$ brew update
$ brew install swiftgen
then follow the steps below in order to run swiftgen with older version.
Step 1: brew uninstall swiftgen
Step 2: Navigate to: https://github.com/SwiftGen/SwiftGen/releases
and download the swiftgen with version: swiftgen-4.2.0.zip.
Unzip the package in a...
How do I do multiple CASE WHEN conditions using SQL Server 2008?
...all items for the last month, works great without conditions until Jan.
In order for it work correctly, needed to add a year and month variable
declare @yr int
declare @mth int
set @yr=(select case when month(getdate())=1 then YEAR(getdate())-1 else YEAR(getdate())end)
set @mth=(select case when m...