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The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or

...g these types of questions: http://cran.r-project.org/doc/manuals/R-lang.html#Indexing R has three basic indexing operators, with syntax displayed by the following examples x[i] x[i, j] x[[i]] x[[i, j]] x$a x$"a" For vectors and matrices the [[ forms are rarely used...
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Routing for custom ASP.NET MVC 404 Error page

... As shown in the screenshots below. 4 - Open the newly added NotFound.cshtml present at Views/Shared and modify it at your will. Now run the application and type in an incorrect url, and you will be greeted with a User friendly 404 page. No more, will users get errors message like Server Error...
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Is it valid to have a tag inside another tag?

...d to be included within another <section> tag? Will it validate in HTML5? 3 Answers ...
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Catching “Maximum request length exceeded”

...side file size validation. Note: This only works in browsers that support HTML5. http://www.html5rocks.com/en/tutorials/file/dndfiles/ <form id="FormID" action="post" name="FormID"> <input id="target" name="target" class="target" type="file" /> </form> <script src="...
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css z-index lost after webkit transform translate3d

...scale(1)? I remember to had a similar problem, and I had to re-arrange the html order of elements, and utilise a transform that I didn't need it just because the z-index of the use of transform changed. If I am not in error, every time that you use a transform, it become the highest z-index availa...
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How to use a RELATIVE path with AuthUserFile in htaccess?

...e current directive's scope." (found here: askapache.com/htaccess/setenvif.html) Because of you have the same scope, you could not get your environment running. – user470370 Mar 20 '12 at 19:44 ...
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SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

...p with alternatives: railsapps.github.io/openssl-certificate-verify-failed.html – Peter P. Nov 18 '13 at 19:15 ERROR: ...
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Textarea onchange detection

... 100) { textArea.style.fontSize = '10pt'; } }) })() <html> <textarea id='my_text_area' rows="4" cols="50" style="font-size:40pt"> This text will change font after 100. </textarea> </html> ...
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Java's final vs. C++'s const

...ication, Chapter 17.4. Memory Model - docs.oracle.com/javase/specs/jls/se8/html/index.html -- googles first hit – Ralph Jan 24 '15 at 11:38 add a comment  |...
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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery

...utput */ var out = document.getElementById('out'); if (!is_OSX) out.innerHTML += "This NOT a Mac or an iOS Device!"; if (is_Mac) out.innerHTML += "This is a Mac Computer!\n"; if (is_iOS) out.innerHTML += "You're using an iOS Device!\n"; if (is_iPhone) out.innerHTML += "This is an iPhone!"; if ...