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How to check for file lock? [duplicate]
...n e)
{
var errorCode = Marshal.GetHRForException(e) & ((1 << 16) - 1);
return errorCode == 32 || errorCode == 33;
}
return false;
}
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Cleanest way to write retry logic?
... TimeSpan retryInterval,
int maxAttemptCount = 3)
{
Do<object>(() =>
{
action();
return null;
}, retryInterval, maxAttemptCount);
}
public static T Do<T>(
Func<T> action,
TimeSpan retryInterval,...
Changing column names of a data frame
...
Use the colnames() function:
R> X <- data.frame(bad=1:3, worse=rnorm(3))
R> X
bad worse
1 1 -2.440467
2 2 1.320113
3 3 -0.306639
R> colnames(X) <- c("good", "better")
R> X
good better
1 1 -2.440467
2 2 1.320113
3 3 -0...
How is Generic Covariance & Contra-variance Implemented in C# 4.0?
...nnounced to support Generic covariance and contra-variance. That is, List<string> can be assigned to List<object> . How could that be?
...
Sending email through Gmail SMTP server with C#
...I assume it's just as easy to make it work in a windows application):
<configuration>
<appSettings>
<add key="EnableSSLOnMail" value="True"/>
</appSettings>
<!-- other settings -->
...
<!-- system.net settings -->
<sys...
Converting Storyboard from iPhone to iPad
...Touch.iPad"
Change the code in the MainStoryboard_iPad.storyboard from:
<simulatedScreenMetrics key="destination" type="retina4"/> to
<simulatedScreenMetrics key="destination"/>
Now save everything and reopen Xcode. The iPad-Storyboard has the same contents as the iPhone-file but ever...
Markdown and image alignment
...
You can embed HTML in Markdown, so you can do something like this:
<img style="float: right;" src="whatever.jpg">
Continue markdown text...
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Comment the interface, implementation or both?
...
For C#, you can use <inheritdoc />, which is supported by SandCastle. (More info...)
– Daniel A.A. Pelsmaeker
Jul 8 '12 at 19:51
...
Difference between Visibility.Collapsed and Visibility.Hidden
...pies in the layout. So it renders whitespace instead of the control.
Visibilty.Collapsed does not render the control and does not reserve the whitespace. The space the control would take is 'collapsed', hence the name.
The exact text from the MSDN:
Collapsed: Do not display the element, and do ...
Node.js vs .Net performance
...s 7 Enterprise 64 bit OS
node server
runs at http://localhost:9090/
/// <reference path="node-vsdoc.js" />
var http = require("http");
http.createServer(function (request, response) {
response.writeHead(200, { "Content-Type": "text/html" });
response.write("<p>hello, world!</p>")...