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Socket.IO - how do I get a list of connected sockets/clients?
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This doesn't work on v1.4.5. Still working on a solution
– Nuno Furtado
Feb 9 '16 at 10:36
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Performance of Java matrix math libraries? [closed]
...lying two dense matrices, ie:
import static jeigen.MatrixUtil.*;
int K = 100;
int N = 100000;
DenseMatrix A = rand(N, K);
DenseMatrix B = rand(K, N);
Timer timer = new Timer();
DenseMatrix C = B.mmul(A);
timer.printTimeCheckMilliseconds();
Results:
Jama: 4090 ms
Jblas: 1594 ms
Ojalgo: 2381 ms (...
What is the purpose of static keyword in array parameter of function like “char s[static 10]”?
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The first declaration tells the compiler that someArray is at least 100 elements long. This can be used for optimizations. For example, it also means that someArray is never NULL.
Note that the C Standard does not require the compiler to diagnose when a call to the function does not meet the...
Should we pass a shared_ptr by reference or by value?
... less readable and just... less tidy. What used to be void Function(Value* v1, Value* v2, Value* v3) is now void Function(const shared_ptr<Value>& v1, const shared_ptr<Value>& v2, const shared_ptr<Value>& v3), and people are okay with this?
– Alex
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How can I get a JavaScript stack trace when I throw an exception?
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+100
Edit 2 (2017):
In all modern browsers you can simply call: console.trace(); (MDN Reference)
Edit 1 (2013):
A better (and simpler)...
source of historical stock data [closed]
...atever format you want. I think the yearly subscription for data is a few $100 bucks.
The main problem with downloading data from a free service is that you only get stocks that still exist, this is called Survivorship Bias and can give you wrong results if you look at many stocks, because you'll ...
Javascript equivalent of Python's zip function
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Check out the library Underscore.
Underscore provides over 100 functions that support both your favorite workaday functional helpers: map, filter, invoke — as well as more specialized goodies: function binding, javascript templating, creating quick indexes, deep equality testing, a...
Python dictionary: Get list of values for list of keys
..., 1:11, 2:12, 3:13}
In[3]: %timeit [m[_] for _ in l] # list comprehension
1000000 loops, best of 3: 762 ns per loop
In[4]: %timeit map(lambda _: m[_], l) # using 'map'
1000000 loops, best of 3: 1.66 µs per loop
In[5]: %timeit list(m[_] for _ in l) # a generator expression passed to a list constr...
iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
...t presented view, it's back to it's original size.
– V1ru8
Apr 7 '11 at 15:38
It worked. But the word in the view look...
How to manually create icns files using iconutil?
...e OS versions that don't use ICNS files... No love for us who use OS10.6.8 V1.1... it's an even worse 'our way or the highway' for the devs than the users.
– Henrik Erlandsson
Sep 7 '12 at 12:19
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