大约有 23,000 项符合查询结果（耗时：0.1401秒） [XML]
How should the ViewModel close the form?
...:
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
MainWindow window = new MainWindow();
var viewModel = new MainWindowViewModel();
viewModel.RequestClose += window.Close;
window.DataContext = viewModel;
window.Show...
Declaring variables inside or outside of a loop
...performance requirements instead of having to go all over your entire code base and tweak and hack things in order to squeeze clock cycles here and there.
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Maximum number of characters using keystrokes A, Ctrl+A, Ctrl+C and Ctrl+V
...68160001953743683783272702066311903448533894049486008426303248121757146615064636953144900245
174442911064952028008546304
50,000 => a very large number!
I agree with @SB that you should always state your assumptions: Mine is that you don't need to paste twice to double the number of characters. ...
How to use SCNetworkReachability in Swift
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Swift 3, IPv4, IPv6
Based on the Martin R's answer:
import SystemConfiguration
func isConnectedToNetwork() -> Bool {
guard let flags = getFlags() else { return false }
let isReachable = flags.contains(.reachable)
let needsConnec...
redirect COPY of stdout to log file from within bash script itself
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I made some little "sourceable" scripts based on this. Can use them in a script like . log or . log foo.log: sam.nipl.net/sh/log sam.nipl.net/sh/log-a
– Sam Watkins
Jul 16 '15 at 3:22
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Add a space (“ ”) after an element using :after
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Which are more performant, CTE or temporary tables?
...Notice in the plan above there is no mention of CTE1. It just accesses the base tables directly and is treated the same as
SELECT A,
ABS(B) AS Abs_B,
F
FROM T
WHERE A = 780
Rewriting by materializing the CTE into an intermediate temporary table here would be massively counter pr...
How does one output bold text in Bash?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to determine the content size of a UIWebView?
...ds rectangle. Subclasses can override this method to return a custom value based on the desired layout of any subviews. For example, a UISwitch object returns a fixed size value that represents the standard size of a switch view, and a UIImageView object returns the size of the image it is currently...
Is 'switch' faster than 'if'?
...r [rsp+30h],4
13FE81C6F je testSwitch+0AFh (13FE81CAFh)
A jump table based solution does not use comparison at all.
Either not enough branches to cause the compiler to generate a jump table, or your compiler simply doesn't generate them. I'm not sure which.
EDIT 2014: There has been some dis...