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Should I use @EJB or @Inject
I have found this question: What is the difference between @Inject and @EJB but I did not get any wiser. I have not done Java EE before nor do I have experience with dependency injection so I do not understand what I should use?
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How to vertically align an image inside a div
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The only (and the best cross-browser) way as I know is to use an inline-block helper with height: 100% and vertical-align: middle on both elements.
So there is a solution: http://jsfiddle.net/kizu/4RPFa/4570/
.frame {
height...
How to prevent gcc optimizing some statements in C?
...ile type qualifier instructs the compiler to be strict about memory stores and loads. One purpose of volatile is to let the compiler know that the memory access has side effects, and therefore must be preserved. In this case, the store has the side effect of causing a page fault, and you want the ...
Create a tar.xz in one command
I am trying to create a .tar.xz compressed archive in one command. What is the specific syntax for that?
5 Answers
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Check if element is visible in DOM
...ion isHidden(el) {
return (el.offsetParent === null)
}
On the other hand, if you do have position fixed elements that might get caught in this search, you will sadly (and slowly) have to use window.getComputedStyle(). The function in that case might be:
// Where el is the DOM element you'd l...
MongoDB/NoSQL: Keeping Document Change History
...his approach is fine though when you're dealing with small-sized documents and/or don't update documents very often.
Only store changes in a new version
Another approach would be to store only the changed fields in a new version. Then you can 'flatten' your history to reconstruct any version of th...
If table exists drop table then create it, if it does not exist just create it
...ks for a list of tables or views! DROP TABLE IF EXISTS 'table1', 'table2'; and DROP VIEW IF EXISTS 'view1', 'view2'; PS- What witchcraft did you use to have `s in inline code!?
– Campbeln
Mar 3 '16 at 23:32
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How to create a new (and empty!) “root” branch?
...answered Oct 24 '17 at 16:57
Mr_and_Mrs_DMr_and_Mrs_D
25.3k2929 gold badges149149 silver badges304304 bronze badges
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Gradle buildscript dependencies
...es. These are the dependencies that are put on the classpath of your build and that you can refer to from your build file. For instance extra plugins that exist on the internet.
The repositories on the root level are used to fetch the dependencies that your project depends on. So all the dependenci...
Does the default constructor initialize built-in types?
...The behavior of () initializer is different in some respects between C++98 and C++03, but not in this case. For the above class C it will be the same: () initializer performs zero initialization of C::x.
Another example of initialization that is performed without involving constructor is, of course...