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Are there best practices for (Java) package organization? [closed]

... Package organization or package structuring is usually a heated discussion. Below are some simple guidelines for package naming and structuring: Follow java package naming conventions Structure your packages according to their functional role as well as their business role...
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MPICH vs OpenMPI

...xtensive optimizations that make it the preferred implementation in nearly all cases. Feature Support from the Latest MPI Standard An orthogonal axis to hardware/platform support is coverage of the MPI standard. Here MPICH is usually far and away superior. MPICH has been the first implementation...
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How to append rows to an R data frame

... Not knowing what you are trying to do, I'll share one more suggestion: Preallocate vectors of the type you want for each column, insert values into those vectors, and then, at the end, create your data.frame. Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, def...
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How to convert String to Long in Kotlin?

...tlin, you don't need to worry about where or why, just know in Kotlin that all String have an extension function toLong() as well as toInt() and others. You can use these. Maybe @ilya can update this answer to current Kotlin (remove jet.String reference.) – Jayson Minard ...
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String concatenation vs. string substitution in Python

...catenation is (significantly) faster according to my machine. But stylistically, I'm willing to pay the price of substitution if performance is not critical. Well, and if I need formatting, there's no need to even ask the question... there's no option but to use interpolation/templating. >>&g...
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Efficiency of purely functional programming

...ssible asymptotic slowdown that can happen when programming purely functionally as opposed to imperatively (i.e. allowing side-effects)? ...
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How to style readonly attribute with CSS?

... selector catches the presence of readonly regardless of the value. Technically false is invalid according to specs, but the internet is not a perfect world. If you need to cover that case, you can do this: input[type="text"]:read-only:not([read-only="false"]) { color: blue; } textarea works the ...
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How to access the first property of a Javascript object?

...ject.keys return order is not guaranteed as per ECMAScript however unofficially it is by all major browsers implementations, please read https://stackoverflow.com/a/23202095 for details on this. share | ...
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Where are iOS simulator screenshots stored?

... For me, there's nothing in that folder. It's all on the Desktop. Not sure why? :/ – chakrit Feb 9 '12 at 6:21 ...
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How can I make the tabs work normally on Xcode 4?

Xcode finally added tabs but the problem is that they behave very strange. For example they will keep a tab open only if it was opened to a new tab. ...