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How to install therubyracer gem on 10.10 Yosemite?
...t helps without any weirdness. Even though you may just be getting a libv8 error, do this! thanks.
– pjammer
Nov 2 '14 at 18:55
2
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Is there a simple, elegant way to define singletons? [duplicate]
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class Foo:
def __init__(self):
print 'Foo created'
f = Foo() # Error, this isn't how you get the instance of a singleton
f = Foo.instance() # Good. Being explicit is in line with the Python Zen
g = Foo.instance() # Returns already created instance
print f is g # True
And here's the c...
Is it possible to print a variable's type in standard C++?
..., "abc");
decltype(testVar)::foo= 1;
Returns:
Compilation finished with errors:
source.cpp: In function 'int main()':
source.cpp:5:19: error: 'foo' is not a member of 'std::tuple<int, double, const char*>'
share
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Creating the Singleton design pattern in PHP5
...nstance();
$fact == $fact2;
But:
$fact = new UserFactory()
Throws an error.
See http://php.net/manual/en/language.variables.scope.php#language.variables.scope.static to understand static variable scopes and why setting static $inst = null; works.
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
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Parsing ifconfig output is error-prone, for instance the above one-liner results in -bash: export: overruns:0': not a valid identifier` for me on RHEL6. Parsing /sys/class/net/$dev/statistics (see the perl script in @ephemient answer) directly works mu...
Redirecting stdout to “nothing” in python
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This is missing some error checking, but great idea
– Mad Physicist
Jul 22 '18 at 23:25
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How to check permissions of a specific directory?
I know that using ls -l "directory/directory/filename" tells me the permissions of a file. How do I do the same on a directory?
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How to get distinct values from an array of objects in JavaScript?
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I get an error : TypeError: (intermediate value).slice is not a function
– AngJobs on Github
Jul 13 '16 at 10:28
7...
Is it valid to replace http:// with // in a ?
...ics script to be loaded through https on IE6 would result in a certificate error.
– Eilistraee
Feb 20 '12 at 14:49
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Measure and Benchmark Time for Ruby Methods
...justments to the system clock, so it's a best practice to use Process.clock_gettime(Process::CLOCK_MONOTONIC) instead. But for rough calculations this doesn't matter. blog.dnsimple.com/2018/03/elapsed-time-with-ruby-the-right-way
– Patrick Brinich-Langlois
Feb ...