大约有 13,916 项符合查询结果（耗时：0.0182秒） [XML]
Set value to null in WPF binding
...
I am using .NET 3.5 SP1 so it's very simple:
<TextBox Text="{Binding Price, TargetNullValue=''}"/>
Which stands for (thanks Gregor for your comment):
<TextBox Text="{Binding Price, TargetNullValue={x:Static sys:String.Empty}}"/>
sys is the imported xml namesp...
How can I output UTF-8 from Perl?
... trying to write a Perl script using the "utf8" pragma, and I'm getting unexpected results. I'm using Mac OS X 10.5 (Leopard), and I'm editing with TextMate. All of my settings for both my editor and operating system are defaulted to writing files in utf-8 format.
...
Should I use .done() and .fail() for new jQuery AJAX code instead of success and error
...
As stated by user2246674, using success and error as parameter of the ajax function is valid.
To be consistent with precedent answer, reading the doc :
Deprecation Notice:
The jqXHR.success(), jqXHR.error(), and jqXHR.complete() callbacks will be deprecated in jQuery 1.8. To prepare your code for...
Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
..... run from the beginning to the end inclusively. Those created using ... exclude the end value.
So a..b is like a <= x <= b, whereas a...b is like a <= x < b.
Note that, while to_a on a Range of integers gives a collection of integers, a Range is not a set of values, but simply a p...
Abstract functions in Swift Language
... Also there is preconditionFailure("Bla bla bla") in Swift which will execute in release builds and also eliminates the need of a return statement. EDIT: Just found out that this method basically is equal to fatalError() but it's the more proper way (Better documentation, introduced in Swift alo...
How do you 'redo' changes after 'undo' with Emacs?
...do. If you undo, and then do a non-editing command such as C-f, then the next undo will undo the undo, resulting in a redo.
Longer version:
You can think of undo as operating on a stack of operations. If you perform some command (even a navigation command such as C-f) after a sequence of undo oper...
How to create SBT project with IntelliJ Idea?
... project - modern versions of IntelliJ can import sbt project out of the box, otherwise you can either use sbt plugin to generate IntelliJ project, or use IntelliJ Scala plugin to create sbt project. Basic features work out of the box using both solutions, some complex builds can have problems, so t...
instanceof Vs getClass( )
...ism.
However, there are cases where these are NOT "design smell". For example, in equals(Object) you need to test the actual type of the argument, and return false if it doesn't match. This is best done using getClass().
Terms like "best practice", "bad practice", "design smell", "antipatter...
Why does Eclipse Java Package Explorer show question mark on some classes?
In the Eclipse Helios Java Package Explorer, I see the Java class icons display a small question mark to the right of the 'J', something like [J?]. This icon is shown on each class within one package in my project, but I cannot find an explanation for this in the documentation.
...
UTF-8 all the way through
...pport UTF-8 fully in my web application. I have tried this in the past on existing servers and always seem to end up having to fall back to ISO-8859-1.
...