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Installing Ruby Gem in Windows

...e rubyinstaller It is recommended by the official Ruby page - see https://www.ruby-lang.org/en/downloads/ Ways of Installing Ruby We have several tools on each major platform to install Ruby: On Linux/UNIX, you can use the package management system of your distribution or third-...
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Form inside a table

... <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Any other browser that supports display:table, display:table-row and display:table-cell should display your css data table the same as it would if you were using the TAB...
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What are the differences between a multidimensional array and an array of arrays in C#?

...rself, and see how both perform. Jagged arrays are much more optimized in .NET. It may be related to bounds checking, but regardless of the reason, timings and benchmarks clearly show that jagged arrays are faster to access than multi-dimensional ones. – Hosam Aly ...
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How do I configure emacs for editing HTML files that contain Javascript?

...bal-mode 1) More on Emacs's multiple multiple modes (sigh) here: http://www.emacswiki.org/emacs/MultipleModes UPDATE: simplified the regexps to detect JavaScript or CSS areas to make them work with HTML5 -- no need for super-precise and fragile regular expressions. ...
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Why check both isset() and !empty()

... isset() tests if a variable is set and not null: http://us.php.net/manual/en/function.isset.php empty() can return true when the variable is set to certain values: http://us.php.net/manual/en/function.empty.php To demonstrate this, try the following code with $the_var unassigned, set ...
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“CAUTION: provisional headers are shown” in Chrome debugger

... I found about the extension that was blocking my resource was through the net-internals tool in Chrome: For Latest Versions of chrome Type chrome://net-export/ in the address bar and hit enter. Start Recording. And save Recording file to local. Open the page that is showing problems. Go back to ...
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Why can't I inherit static classes?

... Torgersen, C# Language PM) Other opinions from channel9 Inheritance in .NET works only on instance base. Static methods are defined on the type level not on the instance level. That is why overriding doesn't work with static methods/properties/events... Static methods are only held once in memory...
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How to add text to a WPF Label in code?

...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
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Define: What is a HashSet?

HashSet The C# HashSet data structure was introduced in the .NET Framework 3.5. A full list of the implemented members can be found at the HashSet MSDN page. ...
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Bootstrap Modal immediately disappearing

...Unfortunately, these won't always find things in all cases. Inspecting the network requests can be a little more robust at giving you a picture of everything loaded on a page. A (Broken) Demo Here's a demo of what happens when you load both the bootstrap.js and bootstrap-modal.js (just to confirm ...