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How should you build your database from source control?
...community wiki
3 revs, 2 users 96%Mac
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Is R's apply family more than syntactic sugar?
... and R version... and in an absolute sense CPU. I just ran with 2.15.2 on Mac and got sapply 50% slower than for and lapply twice as fast.
– John
Jan 13 '13 at 0:08
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Java 8: performance of Streams vs Collections
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}
return Math.sqrt(input);
}
I change the code a bit, ran on my mac book pro which has 8 cores, I got a reasonable result:
Collections: Elapsed time: 1522036826 ns (1.522037 seconds)
Streams: Elapsed time: 4315833719 ns (4.315834 seconds)
Parallel streams: Elapsed time: 2611...
What's the difference between a catalog and a schema in a relational database?
...stgres.
Cluster = A Postgres Installation
When you install Postgres on a machine, that installation is called a cluster. ‘Cluster’ here is not meant in the hardware sense of multiple computers working together. In Postgres, cluster refers to the fact that you can have multiple unrelated databa...
How to remove/delete a large file from commit history in Git repository?
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Mac instructions and some other info appear in the original linked post
– nruth
Mar 5 '18 at 18:55
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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?
...ou should stay away from it. Linux x86 and implements it as a system call.
mach_absolute_time() is an option for very high resolution (ns) timing on OS X. On my system, this does indeed give ns resolution. In principle this clock wraps around, however it is storing ns using a 64-bit unsigned integer...
Stack smashing detected
...rms: X86/Linux,
AMD64/Linux, PPC32/Linux, PPC64/Linux,
and X86/Darwin (Mac OS X).
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How to read the output from git diff?
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On my mac:
info diff then select: Output formats -> Context -> Unified format -> Detailed Unified :
Or online man diff on gnu following the same path to the same section:
File: diff.info, Node: Detailed
Unified, ...
C++ IDE for Linux? [closed]
...your editor; pick your poison — both are state of the art:
Neovim2 or
Emacs.
Depending on your needs, you will then have to install and configure several plugins to make the editor work nicely (that’s the one annoying part). For example, most programmers on Vim will benefit from the YouComp...
C++ Dynamic Shared Library on Linux
...Class*)create();
myClass->DoSomething();
destroy( myClass );
}
On Mac OS X, compile with:
g++ -dynamiclib -flat_namespace myclass.cc -o myclass.so
g++ class_user.cc -o class_user
On Linux, compile with:
g++ -fPIC -shared myclass.cc -o myclass.so
g++ class_user.cc -ldl -o class_user
If...