大约有 5,816 项符合查询结果（耗时：0.0231秒） [XML]
Differences between strong and weak in Objective-C
...w because those views are already strongly held by the main view.
atomic vs. nonatomic refers to the thread safety of the getter and setter methods that the compiler synthesizes for the property. atomic (the default) tells the compiler to make the accessor methods thread-safe (by adding a lock bef...
No Main() in WPF?
...ated automatically.
If you want to provide your own you have to (tested in VS2013 and VS2017):
Right-click App.xaml in the solution explorer, select Properties
Change 'Build Action' to 'Page' (initial value is 'ApplicationDefinition')
Then just add a Main() method to App.xaml.cs. It could be lik...
Is there a better way to do optional function parameters in JavaScript? [duplicate]
...he handful of tests I ran: jsperf.com/optional-function-parameters-ternary-vs-manual
– Jeromy French
Feb 5 '15 at 22:48
1
...
Polymorphism in C++
...ining and dead code elimination, loop unrolling, static stack-based arrays vs heap)
__FILE__, __LINE__, string literal concatenation and other unique capabilities of macros (which remain evil ;-))
templates and macros test semantic usage is supported, but don't artificially restrict how that support...
How to set data attributes in HTML elements
...
[jQuery] .data() vs .attr() vs .extend()
The jQuery method .data() updates an internal object managed by jQuery through the use of the method, if I'm correct.
If you'd like to update your data-attributes with some spread, use --
$('body')....
When is null or undefined used in JavaScript? [duplicate]
...
Thanks for reminding me about abstract vs. strict equality. Was puzzled for a while today why an argument I passed as null was ==undefined. Duh - null is ==undefined, but is not ===undefined! Or in your words, null is abstractly equal to undefined but is not stric...
How can I prevent the scrollbar overlaying content in IE10?
...ed in this article:
http://msdn.microsoft.com/en-us/library/ie/hh771902(v=vs.85).aspx
Set the style to scrollbar to get the scrollbars back:
body {
-ms-overflow-style: scrollbar;
}
scrollbar
Indicates the element displays a classic scrollbar-type
control when its content overflow...
What does the Visual Studio “Any CPU” target mean?
...thing is 64 bit and the incompatibility issues will seem quaint like 16bit vs 32bit is now.
– Gerald Davis
Mar 25 '14 at 17:23
...
Ruby on Rails Server options [closed]
...m one of the authors of Phusion Passenger, one of the app servers.
Apache vs Nginx
They're both web servers. They can serve static files but - with the right modules - can also serve dynamic web apps e.g. those written in PHP. Apache is more popular and has more features, Nginx is smaller and fast...
How can I use UUIDs in SQLAlchemy?
...off the top of mind: size - string uuid takes up twice the space - 16bytes vs 32 chars - not including any formatters. Processing time - more bytes = more processing time by the CPU as your dataset gets bigger. uuid string formats differ by language, adding addition required translations. Easier ...