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How to create a static library with g++?

Can someone please tell me how to create a static library from a .cpp and a .hpp file? Do I need to create the .o and the .a? I would also like to know how can I compile a static library in and use it in other .cpp code. I have header.cpp , header.hpp . I would like to create header.a . Test the...
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How to determine if an NSDate is today?

... You can compare date components: NSDateComponents *otherDay = [[NSCalendar currentCalendar] components:NSCalendarUnitEra | NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay fromDate:aDate]; NSDateComponents *today = [[NSCalendar currentCa...
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How to programmatically send SMS on the iPhone?

...w if it's possible, and how, to programmatically send a SMS from the iPhone , with the official SDK / Cocoa Touch? 18 An...
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Difference between filter and filter_by in SQLAlchemy

Could anyone explain the difference between filter and filter_by functions in SQLAlchemy? Which one should I be using? ...
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public friend swap member function

...standard library has all sorts of unnecessary things, and a member swap is one of them. Why? Let's go on. What we should do is identify what's canonical, and what our class needs to do to work with it. And the canonical method of swapping is with std::swap. This is why member functions aren't use...
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CSS Background Opacity [duplicate]

...before to have a semi-transparent background and you can do this with just one container. Use something like this <article> Text. </article> Then apply some CSS article { position: relative; z-index: 1; } article::before { content: ""; position: absolute; top: 0; left...
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Convert UTC datetime string to local datetime

...onvert time to and from UTC. Recently had a request to have my app be timezone aware, and I've been running myself in circles. Lots of information on converting local time to UTC, which I found fairly elementary (maybe I'm doing that wrong as well), but I can not find any information on easily conve...
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Can the :not() pseudo-class have multiple arguments?

... What? so you would rather write .selector:not(.one):not(.two):not(.three):not(.four) { ... } than .selector { @include not('.one','.two','.three','.four') { ... } } ? – Daniel Tonon Jun 30 '15 at 7:05 ...
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How to validate inputs dynamically created using ng-repeat, ng-show (angular)

... perfect and much easier than doing a directive - can pass a form into components and use this method. Thanks mate! – dinkydani Jun 10 '16 at 16:20 ...
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What do

...you, from within a type-parameterized class or trait, to further constrain one of its type parameters. Here's an example: case class Foo[A](a:A) { // 'A' can be substituted with any type // getStringLength can only be used if this is a Foo[String] def getStringLength(implicit evidence: A =:...