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Performance of FOR vs FOREACH in PHP

... of all, I understand in 90% of applications the performance difference is completely irrelevant, but I just need to know which is the faster construct. That and... ...
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val-mutable versus var-immutable in Scala

... Pretty common question, this one. The hard thing is finding the duplicates. You should strive for referential transparency. What that means is that, if I have an expression "e", I could make a val x = e, and replace e with x. This ...
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What are the possible values of the Hibernate hbm2ddl.auto configuration and what do they do

... From the community documentation: hibernate.hbm2ddl.auto Automatically validates or exports schema DDL to the database when the SessionFactory is created. With create-drop, the database schema will be dropped when the SessionFacto...
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Open a file from Cygwin

Is there an equivalent to OSX open command in cygwin. open opens a file with the default application for that type. 7 A...
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How to change the DataTable Column Name?

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Running Python on Windows for Node.js dependencies

...on executable "python", you can set the PYTHON env variable. And in your comment, you say you did this: set PYTHONPATH=%PYTHONPATH%;C:\My_python_lib That's nice, but that doesn't set the PYTHON variable, it sets the PYTHONPATH variable. Meanwhile, just using the set command only affects the ...
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When do I use a dot, arrow, or double colon to refer to members of a class in C++?

Coming from other C-derived languages (like Java or C#) to C++, it is at first very confusing that C++ has three ways to refer to members of a class: a::b , a.b , and a->b . When do I use which one of these operators? ...
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How can I break an outer loop with PHP?

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stringstream, string, and char* conversion confusion

...implemented in such a way that RVO can kick in (which is very likely), the compiler is permitted to construct the result directly into tmp, eliding the temporary; and any modern C++ compiler will do so when optimizations are enabled. Of course, the bind-to-const-reference solution guarantees no-copy...
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What can you do in MSIL that you cannot do in C# or VB.NET? [closed]

All code written in .NET languages compiles to MSIL, but are there specific tasks / operations that you can do only using MSIL directly? ...