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How to count duplicate value in an array in javascript

...- it was me; I was browsing on mobile, and have clicked the button w/o actually noticing. Once I found out it was too late to revert. Apologies for that, the answer is really good. If you want to edit it, I'd be glad to reverse. – Todor Minakov Jan 19 '19 at 10...
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How do I get the MIN() of two fields in Postgres?

... LEAST(a, b): The GREATEST and LEAST functions select the largest or smallest value from a list of any number of expressions. The expressions must all be convertible to a common data type, which will be the type of the result (see Section 10.5 for details). NULL values in the list are ignored. T...
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CSS force image resize and keep aspect ratio

...ht:95px; width: auto; height: auto; } <p>This image is originally 400x400 pixels, but should get resized by the CSS:</p> <img width="400" height="400" src="http://i.stack.imgur.com/aEEkn.png"> This will make image shrink if it's too big for specified area (as downsi...
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How to extract numbers from a string and get an array of ints?

I have a String variable (basically an English sentence with an unspecified number of numbers) and I'd like to extract all the numbers into an array of integers. I was wondering whether there was a quick solution with regular expressions? ...
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How to get domain URL and application name?

... The web application name (actually the context path) is available by calling HttpServletrequest#getContextPath() (and thus NOT getServletPath() as one suggested before). You can retrieve this in JSP by ${pageContext.request.contextPath}. <p>The co...
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How to suppress Update Links warning?

... UPDATE: After all the details summarized and discussed, I spent 2 fair hours in checking the options, and this update is to dot all is. Preparations First of all, I performed a clean Office 2010 x86 install on Clean Win7 SP1 Ultimate x64...
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Remove duplicate values from JS array [duplicate]

...olution is O(n^2), making it inefficient. – Casey Kuball Sep 21 '17 at 16:35 4 I really wish in 2...
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How to configure Ruby on Rails with no database?

It would be convenient to use Ruby on Rails for a small website project that has no current need for a database. I know I could create an empty database in MySQL and go from there, but does anyone know a better way to run Rails without a database? ...
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How can I get enum possible values in a MySQL database?

...want to populate my dropdowns with enum possible values from a DB automatically. Is this possible in MySQL? 24 Answers ...
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?

I'm using a transaction model to keep track all the events going through the system 2 Answers ...