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Why is IoC / DI not common in Python?
...Python, I simply import from a different location using the same name. But now I am thinking if it's also possible the other way round by defining a MyClassInstances class to each MyClass in Java, which contains only static, fully initialized instances. That would be wired :D
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How do you detect Credit card type based on number?
...to detect the type of credit card based purely on its number. Does anyone know of a definitive, reliable way to find this?
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Why do we need tuples in Python (or any immutable data type)?
...ding a tuple is over 7.6 times faster than building the equivalent list -- now you can't say you've "never seen a noticeable difference" any more, unless your definition of "noticeable" is truly peculiar...
– Alex Martelli
Feb 1 '10 at 4:35
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How to redirect cin and cout to files?
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Here is an working example of what you want to do. Read the comments to know what each line in the code does. I've tested it on my pc with gcc 4.6.1; it works fine.
#include <iostream>
#include <fstream>
#include <string>
void f()
{
std::string line;
while(std::getline(...
What's a good Java, curses-like, library for terminal applications? [closed]
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Java Curses has now gotten some recent attention, and a new release in 2012.
– Nate C-K
Apr 17 '12 at 19:44
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Replace Fragment inside a ViewPager
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This only works for me if I call commitNow() instead of commit() when removing the fragment. Not sure why my use case is different, but hopefully this will save someone some time.
– Ian Lovejoy
Nov 21 '16 at 18:00
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How to delete an old/unused Data Model Version in Xcode
...al 8". For me it appeared on two separate lines. I removed these lines and now it's completely removed from Xcode.
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Instance variables vs. class variables in Python
...else it's code created by an aberrant programmer wanting to show off they know some obscure corner of Python programming.
Alex mentions in his reply that access will be (a little bit) faster due to one less level of lookup... let me further clarify for those who don't know about how this works yet....
How do I catch a numpy warning like it's an exception (not just for testing)?
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To add a little to @Bakuriu's answer:
If you already know where the warning is likely to occur then it's often cleaner to use the numpy.errstate context manager, rather than numpy.seterr which treats all subsequent warnings of the same type the same regardless of where they occ...
Difference between method and function in Scala
...l):
def apply(v1: T1, v2: T2): R
And that tell us all that there is to know about it. A function has an apply method which receives N parameters of types T1, T2, ..., TN, and returns something of type R. It is contra-variant on the parameters it receives, and co-variant on the result.
That varia...