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Handler “ExtensionlessUrlHandler-Integrated-4.0” has a bad module “ManagedPipelineHandler” in its mo

...ervices (IIS) application. You can employ SimpleWorkerRequest directly or extend it. Also, if you look at the MSDN documentation for the System.Web.Hosting namespace (SimpleWorkerRequest is in this namespace), you will also see something similar to the above (again, emphasis is mine): The Sys...
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What is an intuitive explanation of the Expectation Maximization technique? [closed]

Expectation Maximization (EM) is a kind of probabilistic method to classify data. Please correct me if I am wrong if it is not a classifier. ...
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Git Clone: Just the files, please?

... the first level: git archive --remote=<repository URL> | tar -t --exclude="*/*" To list only first-level folders of a remote repo: git archive --remote=<repository URL> | tar -t --exclude="*/*" | grep "/" Note: that does not work for GitHub (not supported) So you would need to cl...
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How to identify server IP address in PHP

...No. On some shared hosts this returns ::1 – TheRealChx101 Aug 2 '14 at 6:18 3 This could be incor...
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Does Ruby regular expression have a not match operator like “!~” in Perl?

I just want to know whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part. ...
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Differences between contentType and dataType in jQuery ajax function

... From the documentation: contentType (default: 'application/x-www-form-urlencoded; charset=UTF-8') Type: String When sending data to the server, use this content type. Default is "application/x-www-form-urlencoded; charset=UTF-8", which is fine for most cases. If you explicitly pass i...
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dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output

...b, .drop=FALSE) %>% summarise(count_a=length(a)) #> # A tibble: 3 x 2 #> b count_a #> <fct> <int> #> 1 1 6 #> 2 2 6 #> 3 3 0 One additional note to go with @Moody_Mudskipper's answer: Using .drop=FALSE can give potentially...
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Open terminal here in Mac OS finder [closed]

... As of Mac OS X Lion 10.7, Terminal includes exactly this functionality as a Service. As with most Services, these are disabled by default, so you'll need to enable this to make it appear in the Services menu. System Preferences > K...
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Should I use px or rem value units in my CSS? [closed]

... TL;DR: use px. The Facts First, it's extremely important to know that per spec, the CSS px unit does not equal one physical display pixel. This has always been true – even in the 1996 CSS 1 spec. CSS defines the reference pixel, w...
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Validating IPv4 addresses with regexp

I've been trying to get an efficient regex for IPv4 validation, but without much luck. It seemed at one point I had had it with (25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?(\.|$)){4} , but it produces some strange results: ...