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Is it possible to ping a server from Javascript?

...eck to see if remote servers are online or not. When I run it from the command line, my page load goes up to a full 60s (for 8 entries, it will scale linearly with more). ...
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What does @@variable mean in Ruby?

What are Ruby variables preceded with double at signs ( @@ )? My understanding of a variable preceded with an at sign is that it is an instance variable, like this in PHP: ...
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How do I set a textbox's text to bold at run time?

I'm using Windows forms and I have a textbox which I would occassionally like to make the text bold if it is a certain value. ...
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How to get terminal's Character Encoding

...or I/O. The terminal emulator itself has no knowledge of them whatsoever, and its currently effective character encoding is a setting somewhere within the emulator program (a data member inside a libvte class in the case of GNOME Terminal). – JdeBP Oct 31 '17 ...
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Can we use join for two different database tables?

...able names. Let's suppose you have two databases on the same server - Db1 and Db2. Db1 has a table called Clients with a column ClientId and Db2 has a table called Messages with a column ClientId (let's leave asside why those tables are in different databases). Now, to perform a join on the above-...
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Redo merge of just a single file

I'm in the middle of a large merge, and I've used git mergetool to resolve all the conflicts, but I have not committed yet, as I wanted to make sure the merge was ok first. ...
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Numpy index slice without losing dimension information

I'm using numpy and want to index a row without losing the dimension information. 6 Answers ...
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Temporarily disable some plugins using pathogen in vim.

...rbert is better suited for my situation, since I do have a lot of ftplugin and such. Thanks for answering, your solution is goign to be used in boxes I can't have pathogen installed. – Somebody still uses you MS-DOS Nov 25 '10 at 13:42 ...
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Using regular expression in css?

I have an html page with divs that have id (s) of the form s1 , s2 and so on. 8 Answers ...
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How to check an Android device is HDPI screen or MDPI screen?

... Density values described at: developer.android.com/guide/practices/screens_support.html – esilver Jan 21 '14 at 21:52 1 ...