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What is the use of “ref” for reference-type variables in C#?
I understand that if I pass a value-type ( int , struct , etc.) as a parameter (without the ref keyword), a copy of that variable is passed to the method, but if I use the ref keyword a reference to that variable is passed, not a new one.
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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
...ipken/sql.js/)
I created a file called base64_data.js (and used btoa() to convert the data that I needed and insert it into a <div> so I could copy it).
var base64_data = "U1FMaXRlIGZvcm1hdCAzAAQA ...<snip lots of data> AhEHwA==";
and then included the data in the html like normal ja...
How to get the type of T from a member of a generic class or method?
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new List<int>().GetType().GetGenericArguments() returns System.Type[1] here with System.Int32 as entry
– Rauhotz
Feb 17 '09 at 15:40
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Take a screenshot of a webpage with JavaScript?
...eenshot. I had to use the keybd_event API call because SendKeys can't do PrintScreen. Here's the code for that:
Declare Sub keybd_event Lib "user32" _
(ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Long, ByVal dwExtraInfo As Long)
Public Const CaptWindow = 2
Public Sub ScreenGrab()
...
How to make an unaware datetime timezone aware in python
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I use this statement in Django to convert an unaware time to an aware:
from django.utils import timezone
dt_aware = timezone.make_aware(dt_unaware, timezone.get_current_timezone())
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Is there a naming convention for git repositories?
...s often seen in URLs (e.g. on github) that may be case insensitive or even converted to lower case, and for this reason camelCase is a bad idea. I don't think github does this, but still seems better to be save.
– jdg
Aug 7 '13 at 15:48
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What's Alternative to Singleton
...he last article explains in detail how to move the creation of new objects into a factory, so you can avoid using singletons. Worth reading for sure.
In short we move all of the new operators to a factory.
We group all of the objects of similar lifetime into a single factory.
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Unable to evaluate expression because the code is optimized or a native frame is on top of the call
...dResponse) that passes false for the endResponse parameter to suppress the internal call to Response.End. For example: Response.Redirect
("nextpage.aspx", false); If you use this workaround, the code
that follows Response.Redirect is executed.
For Server.Transfer, use the Server.Execute method...
Collections.emptyList() vs. new instance
...., a list to which you cannot add elements. (Same applies to the List.of() introduced in Java 9.)
In the rare cases where you do want to modify the returned list, Collections.emptyList() and List.of() are thus not a good choices.
I'd say that returning an immutable list is perfectly fine (and even...
What is the Java equivalent for LINQ? [closed]
... JDK8 called The Power of the Arrow, also NetBeans 8 has great support for converting constructs to JDK8 which I've also blogged about Migrating to JDK 8 with NetBeans.
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