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Caveats of select/poll vs. epoll reactors in Twisted
...se, but we're talking about something on the order of 10 or fewer), select can beat epoll in memory usage and runtime speed. Of course, for such small numbers of sockets, both mechanisms are so fast that you don't really care about this difference in the vast majority of cases.
One clarification, ...
Why can't my program compile under Windows 7 in French? [closed]
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Many problems are due to caching, but yours is one of the other kind of hard problems: naming things. Yes, localization is hard.
You didn't mention which variant of French you're using, but from the error message, I think you're using “French (Fra...
Are HLists nothing more than a convoluted way of writing tuples?
... in finding out where the differences are, and more generally, to identify canonical use cases where HLists cannot be used (or rather, don't yield any benefits over regular lists).
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Does static constexpr variable inside a function make sense?
...uite require the compiler to create a new array on the stack for every invocation of a function with a local non-static const array, because the compiler could take refuge in the as-if principle provided it can prove that no other such object can be observed.
That's not going to be easy to prove, u...
What is the canonical way to check for errors using the CUDA runtime API?
...tag wiki , I see it is often suggested that the return status of every API call should checked for errors. The API documentation contains functions like cudaGetLastError , cudaPeekAtLastError , and cudaGetErrorString , but what is the best way to put these together to reliably catch and report er...
Is it possible to implement dynamic getters/setters in JavaScript?
...ginal answer from 2011):
This changed as of the ES2015 (aka "ES6") specification: JavaScript now has proxies. Proxies let you create objects that are true proxies for (facades on) other objects. Here's a simple example that turns any property values that are strings to all caps on retrieval:
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Default constructor vs. inline field initialization
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Initialisers are executed before constructor bodies. (Which has implications if you have both initialisers and constructors, the constructor code executes second and overrides an initialised value)
Initialisers are good when you always need the same initial value (like in your example, an arr...
C++ unordered_map using a custom class type as the key
...ngs:
A hash function; this must be a class that overrides operator() and calculates the hash value given an object of the key-type. One particularly straight-forward way of doing this is to specialize the std::hash template for your key-type.
A comparison function for equality; this is required be...
how to listen to N channels? (dynamic select statement)
to start an endless loop of executing two goroutines, I can use the code below:
5 Answers
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How do I put a bunch of uncommitted changes aside while working on something else
...aves the changes and removes them from the working directory so the branch can continue. It doesn't create a change-set.
hg shelve --all --name "UnfinishedChanges"
hg unshelve --name "UnfinishedChanges"
Update/Edit: Newer versions of mercurial may need to use
hg shelve -n "UnfinishedChanges"
hg...