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Undefined reference to static constexpr char[]

...defined reference. If I make the array a non-member then it compiles. What is going on? 6 Answers ...
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What in the world are Spring beans?

...d that are managed by the Spring IoC* container are called beans. A bean is an object that is instantiated, assembled, and otherwise managed by a Spring IoC container. These beans are created with the configuration metadata that you supply to the container, for example, in the form of XML ...
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How can I pair socks from a pile efficiently?

...ng the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average. ...
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Should I use px or rem value units in my CSS? [closed]

...ortant to know that per spec, the CSS px unit does not equal one physical display pixel. This has always been true – even in the 1996 CSS 1 spec. CSS defines the reference pixel, which measures the size of a pixel on a 96 dpi display. On a display that has a dpi substantially different than 96d...
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Difference between onStart() and onResume()

...t get the meaning of onStart() transition state. The onResume() method is always called after onStart() . Why can't it be the onResume() is invoked after onRestart() and onCreate() methods just excluding onStart() ? What is its purpose? ...
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Determine if variable is defined in Python [duplicate]

...er a variable has been set at a particular place in the code at runtime? This is not always obvious because (1) the variable could be conditionally set, and (2) the variable could be conditionally deleted. I'm looking for something like defined() in Perl or isset() in PHP or defined? in Ruby. ...
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Hibernate vs JPA vs JDO - pros and cons of each? [closed]

...otes: JDO and JPA are both specifications, not implementations. The idea is you can swap JPA implementations, if you restrict your code to use standard JPA only. (Ditto for JDO.) Hibernate can be used as one such implementation of JPA. However, Hibernate provides a native API, with features above...
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Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?

... goto should never be used if possible. While perusing libavcodec (which is written in C) the other day, I noticed multiple uses of it. Is it ever advantageous to use goto in a language that supports loops and functions? If so, why? ...
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Entity Framework: There is already an open DataReader associated with this Command

I am using Entity Framework and occasionally i will get this error. 17 Answers 17 ...
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What is state-of-the-art for text rendering in OpenGL as of version 4.1? [closed]

...ixel shader instead, these suffer from not being easily antialiased, which is trivial using a distance-map-textured quad, and evaluating curves in the shader is still computationally much more expensive than necessary. The best trade-off between "fast" and "quality" are still textured quads with a ...