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What kind of virtual machine is BEAM (the Erlang VM)?
From what I understand a virtual machine falls into two categories either "system virtual machine" or a "process virtual machine". It's kind of fuzzy to me where BEAM lies. Is there another kind of virtual machine I am not aware of?
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How do I upgrade PHP in Mac OS X?
... it will probably give you a newer version of PHP. I'm running OS X 10.6.2 and it has PHP 5.3.0.
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Read text file into string array (and write)
The ability to read (and write) a text file into and out of a string array is I believe a fairly common requirement. It is also quite useful when starting with a language removing the need initially to access a database. Does one exist in Golang?
e.g.
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How to find the Windows version from the PowerShell command line
... When I run winver it shows me version 1607. But the powershell command above does not give 1607. Where do I get this "1607" number in Powershell?
– CMCDragonkai
Dec 10 '16 at 8:01
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Why does GCC generate 15-20% faster code if I optimize for size instead of speed?
I first noticed in 2009 that GCC (at least on my projects and on my machines) have the tendency to generate noticeably faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), and I have been wondering ever since why.
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“java.lang.OutOfMemoryError : unable to create new native Thread”
...nder the control of an Executor if at all possible. There are plenty of standard executors with various behavior which your code can easily control.
(There are many reasons why the number of threads is limited, but they vary from operating system to operating system)
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Make sure only a single instance of a program is running
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The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version is available singleto...
Convert Float to Int in Swift
I want to convert a Float to an Int in Swift. Basic casting like this does not work because these types are not primitives, unlike float s and int s in Objective-C
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Check if character is number?
...);
}
The comment for this function reads:
// parseFloat NaNs numeric-cast false positives (null|true|false|"")
// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
// subtraction forces infinities to NaN
I think we can trust that these chaps have spent quit...
Installing PG gem on OS X - failure to build native extension
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Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will p...