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postgresql - sql - count of `true` values

... count(nullif(myCol, false)), -- count true values count(myCol); http://www.postgresql.org/docs/9.0/static/functions-conditional.html share | improve this answer | ...
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Execute JavaScript using Selenium WebDriver in C#

How is this achieved? Here it says the java version is: 8 Answers 8 ...
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How do I list all cron jobs for all users?

Is there a command or an existing script that will let me view all of a *NIX system's scheduled cron jobs at once? I'd like it to include all of the user crontabs, as well as /etc/crontab , and whatever's in /etc/cron.d . It would also be nice to see the specific commands run by run-parts in /e...
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How to find time complexity of an algorithm

... This is an excellent article : http://www.daniweb.com/software-development/computer-science/threads/13488/time-complexity-of-algorithm The below answer is copied from above (in case the excellent link goes bust) The most common metric for calculating tim...
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Should we pass a shared_ptr by reference or by value?

When a function takes a shared_ptr (from boost or C++11 STL), are you passing it: 10 Answers ...
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How to convert “camelCase” to “Camel Case”?

...est in this, particularly in handling sequences of capitals, such as in xmlHTTPRequest. The listed functions would produce "Xml H T T P Request" or "Xml HTTPRequest", mine produces "Xml HTTP Request". function unCamelCase (str){ return str // insert a space between lower & upper ...
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Gunicorn worker timeout error

... Could it be this? http://docs.gunicorn.org/en/latest/settings.html#timeout Other possibilities could be your response is taking too long or is stuck waiting. share ...
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Java 8 Distinct by property

In Java 8 how can I filter a collection using the Stream API by checking the distinctness of a property of each object? 2...
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What is the role of src and dist folders?

... for assets on the web to make them smaller. You can see an example here: http://blog.kevinchisholm.com/javascript/node-js/javascript-concatenation-and-minification-with-the-grunt-js-task-runer/ share | ...
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What is the difference between IEnumerator and IEnumerable? [duplicate]

What are the differences between IEnumerator and IEnumerable? 4 Answers 4 ...