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Homebrew install specific version of formula?

... TLDR: brew install postgresql@8.4.4 See answer below for more details. *(I’ve re-edited my answer to give a more thorough workflow for installing/using older software versions with homebrew. Feel free to add a note if you found the old version better.) Let’s start with the ...
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Is there a way to instantiate objects from a string holding their class name?

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Should services always return DTOs, or can they also return domain models?

...g duplication of code, but as your project expands then it would make much more sense, specially in a team environment where different teams are assigned to different layers. DTO might add additional complexity to your application, but so are your layers. DTO is an expensive feature of your system,...
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What does Ruby have that Python doesn't, and vice versa?

...ould like to see an example of how Ruby blocks help you to write something more concisely or more beautiful than with Python because it has not blocks. Your example could be written: for i in [1, 2, 3, 4]: print(i + 5). It doesn't use blocks, but its concise and beautiful as well as the ruby each ex...
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Java “Virtual Machine” vs. Python “Interpreter” parlance?

...s analogous to an instruction set of a specific CPU and tends to work at a more fundamental level with very basic building blocks of such instructions (or byte codes) that are independent of the next. An instruction executes deterministically based only on the current state of the virtual machine an...
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The new keyword “auto”; When should it be used to declare a variable type? [duplicate]

...n(); it != v.end(); ++it) //v is some [std] container { //.. } Or, more generally, //good : auto increases readability here for(auto it = std::begin(v); it != std::end(v); ++it)//v could be array as well { //.. } But when the type is not very well-known and infrequently used , the...
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Accessing inactive union member and undefined behavior?

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How to “warm-up” Entity Framework? When does it get “cold”?

...ge goes through to the database, so it's not so easy to deal with. Code is more flexible. Do not use a lot of TPT inheritance (that's a general performance issue in EF). Neither build your inheritance hierarchies too deep nor too wide. Only 2-3 properties specific to some class may not be enough to...
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live output from subprocess command

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How do emulators work and how are they written? [closed]

... instructions but compile them to machine code on the fly -- this makes it more difficult to optimize, but that's out of the scope of this answer, unless enough people are interested) With static recompilation, you do the same as in dynamic recompilation, but you follow branches. You end up buildin...