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Explanation of JSONB introduced by PostgreSQL

PostgreSQL just introduced JSONB and it's already trending on hacker news . It would be great if someone could explain how it's different from Hstore and JSON previously present in PostgreSQL. What are its advantages and limitations and when should someone consider using it? ...
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Is it possible to delete an object's property in PHP?

If I have an stdObject say, $a . 4 Answers 4 ...
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ASP.NET web.config: configSource vs. file attributes

Within an web.config -file in an ASP.NET-application some sections of config, like appSettings and connectionStrings , supports the attributes file and configSource . ...
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Default constructor with empty brackets

Is there any good reason that an empty set of round brackets (parentheses) isn't valid for calling the default constructor in C++? ...
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Redirect website after certain amount of time

What do I have to do to have a function on a website where it says it will redirect you to the site in 3 seconds or so? 7 ...
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How to retrieve a user environment variable in CMake (Windows)

I know how to retrieve a normal machine wide environment variable in CMAKE using 4 Answers ...
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What does apply_filters(…) actually do in WordPress?

I'm trying to understand some of the function in WordPress, but I can't get my head around what apply_filters(...) actually does. ...
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Reference alias (calculated in SELECT) in WHERE clause

The calculated value BalanceDue that is set as a variable in the list of selected columns cannot be used in the WHERE clause. ...
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How to concatenate two IEnumerable into a new IEnumerable?

I have two instances of IEnumerable<T> (with the same T ). I want a new instance of IEnumerable<T> which is the concatenation of both. ...
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PHP script - detect whether running under linux or Windows?

I have a PHP script that may be placed on a windows system or a linux system. I need to run different commands in either case. ...