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How to vertically center a container in Bootstrap?

I'm looking for a way to vertically center the container div inside the jumbotron and to set it in the middle of the page. ...
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What is the best method to merge two PHP objects?

... If your objects only contain fields (no methods), this works: $obj_merged = (object) array_merge((array) $obj1, (array) $obj2); This actually also works when objects have methods. (tested with PHP 5.3 and 5.6) ...
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What is the difference between \r and \n?

... Mac, but I'm not sure exactly how they're different, and which to search for/match in regexes. 9 Answers ...
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How to initialize a two-dimensional array in Python?

... A pattern that often came up in Python was bar = [] for item in some_iterable: bar.append(SOME EXPRESSION) which helped motivate the introduction of list comprehensions, which convert that snippet to bar = [SOME EXPRESSION for item in some_iterable] which is shorter an...
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UILabel is not auto-shrinking text to fit label size

I have this strange issue, and im dealing with it for more than 8 hours now.. Depending on situation i have to calculate UILabels size dynamically, e.g my UIViewController receives an event and i change UILabels size. from bigger to smaller. The size of my UILabel gets smaller and i ge...
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What are unit tests, integration tests, smoke tests, and regression tests?

...n tests? What are the differences between them and which tools can I use for each of them? 17 Answers ...
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Converting Secret Key into a String and Vice Versa

I am generating a key and need to store it in DB, so I convert it into a String, but to get back the key from the String. What are the possible ways of accomplishing this? ...
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How to use gitignore command in git

I'm working first time on git. I have pushed my branch on github and it pushed all the library and documents into the github. Now what can I do and how can I use gitignore command to avoid the same mistake again. ...
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Domain Driven Design: Domain Service, Application Service

...s service within the domain assembly and if so, would I also inject repositories into that domain service? Some info would be really helpful. ...
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Why do you use typedef when declaring an enum in C++?

... it like so: TokenType my_type; If you use the second style, you'll be forced to declare your variable like this: enum TokenType my_type; As mentioned by others, this doesn't make a difference in C++. My guess is that either the person who wrote this is a C programmer at heart, or you're compi...