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What exactly is LLVM?
...ctual machine code).
LLVM can also act as a JIT compiler - it has support for x86/x86_64 and PPC/PPC64 assembly generation with fast code optimizations aimed for compilation speed.
Unfortunately disabled since 2013, there was the ability to play with LLVM's machine code generated from C or C++ cod...
How to unpack and pack pkg file?
I have a pkg file created by Install Maker for Mac.
I want to replace one file in pkg. But I must do this under Linux system, because this is a part of download process. When user starts to download file server must replace one file in pkg.
I have a solution how unpack pkg and replace a file but I d...
How does the MapReduce sort algorithm work?
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Here are some details on Hadoop's implementation for Terasort:
TeraSort is a standard map/reduce sort, except for a custom partitioner that uses a sorted list of N − 1 sampled keys that define the key range for each reduce. In particular, all keys such that sample[i ...
How to echo with different colors in the Windows command line
... single line in a different color.
Use ANSI Escape Sequences.
Windows before 10 - no native support for ANSI colors on the console
For Windows version below 10, the Windows command console doesn't support output coloring by default. You could install either Cmder, ConEmu, ANSICON or Mintty (used...
HintPath vs ReferencePath in Visual Studio
...8/resolving-file-references-in-team-build-part-2/
There is a search order for assemblies when building. The search order is as follows:
Files from the current project – indicated by ${CandidateAssemblyFiles}.
$(ReferencePath) property that comes from .user/targets file.
%(HintPath) metadata ind...
Finding three elements in an array whose sum is closest to a given number
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Is there any efficient algorithm other than brute force search to find the three integers?
Yep; we can solve this in O(n2) time! First, consider that your problem P can be phrased equivalently in a slightly different way that eliminates the need for a "target value":
o...
When to use os.name, sys.platform, or platform.system?
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Dived a bit into the source code.
The output of sys.platform and os.name are determined at compile time. platform.system() determines the system type at run time.
sys.platform is specified as a compiler define during the build configuration.
os.name checks whether certain os spe...
JS: Check if date is less than 1 hour ago?
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Won't this accept dates which are before the hour as well? (i.e. a negative differential)
– information_interchange
Nov 17 '18 at 0:10
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Was PreferenceFragment intentionally excluded from the compatibility package?
... the omission was intentional" -- the only people who can answer that work for Google. You are welcome to get a job at Google to try to find out. "there is no means of extending PreferenceActivity in the way you've described" -- you are welcome to download the code that I linked to.
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What is base 64 encoding used for?
...d people talking about "base 64 encoding" here and there. What is it used for?
18 Answers
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