大约有 44,000 项符合查询结果（耗时：0.0592秒） [XML]
How to change the CHARACTER SET (and COLLATION) throughout a database?
...le (Mysql). He set it up with Latin collation, when it should be UTF8, and now I have issues. Every record with Chinese and Japan character turn to ??? character.
...
commandButton/commandLink/ajax action/listener method not invoked or input value not set/updated
...So, if they were originally sitting inside a <form>, then they would now not anymore sit in a <form>. See also p:commandbutton action doesn't work inside p:dialog
Bug in the framework. For example, RichFaces has a "conversion error" when using a rich:calendar UI element with a defaultLa...
How do I create a message box with “Yes”, “No” choices and a DialogResult?
... The answer was for Windows, not Windows Phone which I don't know much about :)
– Mikael Svenson
Apr 14 '13 at 18:26
25
...
Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
...avoid for large data, and why := and set() were introduced to data.table.
Now, with our copied newDT we can modify it by reference :
newDT
# a b
# [1,] 1 11
# [2,] 2 200
newDT[2, b := 400]
# a b # See FAQ 2.21 for why this prints newDT
# [1,] 1 11
# [2,] 2 400
.Internal(in...
Mock framework vs MS Fakes frameworks
... like this:
using (ShimsContext.Create())
{
System.Fakes.ShimDateTime.NowGet = () => { return new DateTime(fixedYear, 1, 1); };
}
My worry with shims is that people will start seeing them as "an easier way to unit test" because it doesn't force you to write code the way you should. For a ...
What is the “FS”/“GS” register intended for?
So I know what the following registers and their uses are supposed to be:
5 Answers
5
...
Passing Data between View Controllers
...elf didFinishEnteringItem:itemToPassBack];
That's it for ViewControllerB. Now in ViewControllerA.h, tell ViewControllerA to import ViewControllerB and conform to its protocol.
#import "ViewControllerB.h"
@interface ViewControllerA : UIViewController <ViewControllerBDelegate>
In ViewControl...
Why does SIGPIPE exist?
...
You're right, I don't know why I accepted that in the first place. This answer makes sense, though IMO it's odd that e.g. on Linux this laziness is achieved by kernel and not the libc.
– Shea Levy
Mar 19 '14 a...
Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?
...on is [A] rather than [+A]).
Note that there is another type of variance known as contravariance. This is very important as it explains why covariance can cause some issues. Contravariance is literally the opposite of covariance: parameters vary upward with subtyping. It is a lot less common par...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
...oken if you are not using en encrypted connection (HTTPS) allowing what's known as Man-in-the-middle attacks.
Passing the access token directly in a URL param could in theory be possible but the auth sever would have to make sure the redirect URI is using HTTPS with TLS encryption and a 'trusted' S...