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Programmatically find the number of cores on a machine
...ine, if a system is capable of turning some off they might not be counted. Calling sysconf with "_SC_NPROCESSORS_CONF" will return the total CPUs configured.
– Chris S
Apr 23 '11 at 18:43
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PHP session lost after redirect
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First, carry out these usual checks:
Make sure session_start(); is called before any sessions are being called. So a safe bet would be to put it at the beginning of your page, immediately after the opening <?php declaration before anything else. Also ensure there are no whitespaces/tabs b...
Combining node.js and Python
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We are highly concerned about speed, what is the most elegant way how to call a Python "worker" from node.js in an asynchronous non-blocking way?
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Parse query string in JavaScript [duplicate]
...mentById('output');
function output(msg) {
msg = Array.prototype.slice.call(arguments, 0).join("\n");
if($output) $output.innerHTML += "\n" + msg + "\n";
else console.log(msg);
}
var results = {}; // save results, so we can confirm we're not incorrectly referencing
$.each(tests, function...
Python extending with - using super() Python 3 vs Python 2
...ass__, self), but that is wrong. If Class2 inherits from Class1 and Class1 calls super(self.__class__, self).__init__(), Class1's __init__ will then call itself when instantiating an instance of Class2.
– jpmc26
Jul 15 '15 at 18:10
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What is the difference between Trap and Interrupt?
...emory access. It's also the usual way to invoke a kernel routine (a system call) because those run with a higher priority than user code. Handling is synchronous (so the user code is suspended and continues afterwards). In a sense they are "active" - most of the time, the code expects the trap to ha...
What is an idempotent operation?
...ing, an idempotent operation is one that has no additional effect if it is called more than once with the same input parameters. For example, removing an item from a set can be considered an idempotent operation on the set.
In mathematics, an idempotent operation is one where f(f(x)) = f(x). For ex...
Accessing outside variable using anonymous function as params
Basically I use this handy function to processing db rows (close an eye on PDO and/or other stuff)
2 Answers
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OSError: [Errno 2] No such file or directory while using python subprocess in Django
I am trying to run a program to make some system calls inside Python code using subprocess.call() which throws the following error:
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Is there a wikipedia API just for retrieve content summary?
... It is very recommendable to use &redirects=1 which redirects automatically to content of synonyms
– joecks
Feb 13 '16 at 14:42
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