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Why can't (or doesn't) the compiler optimize a predictable addition loop into a multiplication?
...while reading the brilliant answer by Mysticial to the question: why is it faster to process a sorted array than an unsorted array ?
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What is this Javascript “require”?
I'm trying to get Javascript to read/write to a PostgreSQL database. I found this project on github. I was able to get the following sample code to run in node.
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“using namespace” in c++ headers
... another program I will get the namespace imported into my program, maybe without realizing, intending or wanting it (header inclusion can be very deeply nested).
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shortcut for creating a Map from a List in groovy?
...ovy version 1.7.9 came out, so the method collectEntries didn't exist yet. It works exactly as the collectMap method that was proposed:
Map rowToMap(row) {
row.columns.collectEntries{[it.name, it.val]}
}
If for some reason you are stuck with an older Groovy version, the inject method can also...
What does SynchronizationContext do?
In the book Programming C#, it has some sample code about SynchronizationContext :
8 Answers
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What's the scope of the “using” declaration in C++?
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When you #include a header file in C++, it places the whole contents of the header file into the spot that you included it in the source file. So including a file that has a using declaration has the exact same effect of placing the using declaration at the top of ...
Visual Studio : short cut Key : Duplicate Line
...io 2017 (v15.6 and after)
Ctrl + D
In Visual Studio 2017 (pre v15.6)
(edit) This feature is now built-in in VS2017: Ctrl + E, V duplicates a line if nothing is selected, or duplicates selection. You can assign it to a different key combination, or find it in the menu:
See this reference for mo...
Unit testing code with a file system dependency
I am writing a component that, given a ZIP file, needs to:
11 Answers
11
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Getting number of elements in an iterator in Python
Is there an efficient way to know how many elements are in an iterator in Python, in general, without iterating through each and counting?
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Why does C# disallow readonly local variables?
Having a friendly debate with a co-worker about this. We have some thoughts about this, but wondering what the SO crowd thinks about this?
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