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What's the difference between Ruby's dup and clone methods?

...s often my source for answers to these questions, since it is quite clear, and a fairly compliant Ruby implementation. share | improve this answer | follow | ...
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How are POST and GET variables handled in Python?

In PHP you can just use $_POST for POST and $_GET for GET (Query string) variables. What's the equivalent in Python? 6 ...
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How to stop /#/ in browser with react-router?

... For the versions 1, 2 and 3 of react-router, the correct way to set the route to URL mapping scheme is by passing a history implementation into the history parameter of <Router>. From the histories documentation: In a nutshell, a history...
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How to detect page zoom level in all modern browsers?

I need this because some of my calculations are pixel-based and they may fluctuate when zoomed. 28 Answers ...
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WSGI vs uWSGi with Nginx [closed]

...Ok, guys this confusion is because of lack of detail from several sources, and the naming of these protocols, and what WSGI actually is. Summary: WSGI and uwsgi both ARE protocols, not servers. It is used to communicate with web servers for load balancing and especially to take advantage of extr...
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What does the star operator mean, in a function call?

... s = sum(1, 2) The double star ** does the same, only using a dictionary and thus named arguments: values = { 'a': 1, 'b': 2 } s = sum(**values) You can also combine: def sum(a, b, c, d): return a + b + c + d values1 = (1, 2) values2 = { 'c': 10, 'd': 15 } s = sum(*values1, **values2) w...
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Performance difference for control structures 'for' and 'foreach' in C#

...corlib]System.IDisposable::Dispose() IL_002f: endfinally } // end handler IL_0030: ret } // end of method Test::IterateOverList The compiler treats arrays differently, converting a foreach loop basically to a for loop, but not List<T>. Here's the equivalent code for an array: sta...
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How do I monitor the computer's CPU, memory, and disk usage in Java?

... you use the SIGAR API. I use the SIGAR API in one of my own applications and it is great. You'll find it is stable, well supported, and full of useful examples. It is open-source with a GPL 2 Apache 2.0 license. Check it out. I have a feeling it will meet your needs. Using Java and the Sigar ...
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Measure time in Linux - time vs clock vs getrusage vs clock_gettime vs gettimeofday vs timespec_get?

...ng functions, time , clock getrusage , clock_gettime , gettimeofday and timespec_get , I want to understand clearly how they are implemented and what are their return values in order to know in which situation I have to use them. ...
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Is the sizeof(some pointer) always equal to four?

... be size 2 on a 16-bit system (if you can find one), 4 on a 32-bit system, and 8 on a 64-bit system, but there's nothing to be gained in relying on a given size. share | improve this answer ...