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How to remove focus around buttons on click

... I found this Q and A on another page, and overriding the button focus style worked for me. This problem may be specific to MacOS with Chrome. .btn:focus { outline: none; box-shadow: none; } Note though that this has implications for ...
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What is the difference between include and extend in Ruby?

...correct. However there is more to it than that. If you have a class Klazz and module Mod, including Mod in Klazz gives instances of Klazz access to Mod's methods. Or you can extend Klazz with Mod giving the class Klazz access to Mod's methods. But also you can extend an arbitrary object with o.exte...
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When should I use a List vs a LinkedList

...his should not be an accepted answer. As I was learning I did some tests and felt like sharing them. Original answer... I found interesting results: // Temporary class to show the example class Temp { public decimal A, B, C, D; public Temp(decimal a, decimal b, decimal c, decimal d) ...
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How to specify maven's distributionManagement organisation wide?

...istributionManagement> </project> This can be built, released, and deployed to your local nexus so everyone has access to its artifact. Now for all projects which you wish to use it, simply include this section: <parent> <groupId>your.company</groupId> <artifac...
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How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?

...here for more details): Search in Elements panel like below Execute $x() and $$() in Console panel, as shown in Lawrence's answer Third party extensions (not really necessary in most of the cases, could be an overkill) Here is how you search XPath in Elements panel: Press F12 to open Chrome De...
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SQL - using alias in Group By

...d because they must have been introduced in a previous step. So in Oracle and SQL Server, you cannot use a term in the GROUP BY clause that you define in the SELECT clause because the GROUP BY is executed before the SELECT clause. There are exceptions though: MySQL and Postgres seem to have additi...
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Can't launch my app in Instruments: At least one target failed to launch

... Edit the scheme for your target and under "Profile [App Name]" set the Build Configuration to Debug (it's usually Release by default). share | improve this...
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could not resolve host github.com error while cloning remote repository in git

What I did: I have created a remote repository on Github and I am trying to clone the remote repository on my local machine. While cloning I am providing the clone URL & target folder. ...
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What exactly is Arel in Rails 3.0?

I understand that it is a replacement for ActiveRecord and that it uses objects instead of queries. 4 Answers ...
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Forward host port to docker container

...cker container access ports opened by the host? Concretely I have MongoDB and RabbitMQ running on the host and I'd like to run a process in a Docker container to listen to the queue and (optionally) write to the database. ...