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What is the difference between the template method and the strategy patterns?
...a client invokes methods of the template's external interface the template calls its abstract methods (its internal interface) as required to invoke the algorithm.
class ConcreteAlgorithm : AbstractTemplate
{
void DoAlgorithm(int datum) {...}
}
class AbstractTemplate
{
void run(int datum) ...
Is there a way to auto-adjust Excel column widths with pandas.ExcelWriter?
... FYI: In my case I needed to use "index=False" in the "df.to_excel(...)" call, or else the columns were off by 1
– denvar
Jan 12 '17 at 4:20
1
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What is the most efficient way of finding all the factors of a number in Python?
...solving Project Euler puzzles myself. In some problems, a divisor check is called inside two nested for loops, and the performance of this function is thus essential.
Combining this fact with agf's excellent solution, I've ended up with this function:
from math import sqrt
def factors(n):
...
What is “:-!!” in C code?
...
sizeof(struct { int: -!!(e); }))
(e): Compute expression e.
!!(e): Logically negate twice: 0 if e == 0; otherwise 1.
-!!(e): Numerically negate the expression from step 2: 0 if it was 0; otherwise -1.
struct{int: -!!(0);} --> struct{int: 0;}: If it was zero, then we declare a struct with an a...
Rebasing a Git merge commit
...answered Jan 24 '11 at 16:01
siridesiride
156k44 gold badges2929 silver badges5353 bronze badges
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Read whole ASCII file into C++ std::string [duplicate]
...t, you could find the file length the same was as in the char* example and call std::string::reserve to preallocate the necessary space.
– Tyler McHenry
Apr 8 '10 at 17:36
48
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How do I change screen orientation in the Android emulator?
... 7 is what I use, just make sure you have NumLock turned off so you're basically pressing the "Home" key on the Numpad.
– Mark B
Jan 4 '10 at 16:23
3
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Android Shared preferences for creating one time activity (example) [closed]
...
apply() is asynchronous call to perform disk I/O where as commit() is synchronous. So avoid calling commit() from the UI thread.
– Aniket Thakur
Nov 10 '15 at 8:55
...
Why do pthreads’ condition variable functions require a mutex?
.... That's why you need it locked before you do a wait.
The wait will "atomically" unlock the mutex, allowing others access to the condition variable (for signalling). Then when the condition variable is signalled or broadcast to, one or more of the threads on the waiting list will be woken up and th...
Is it safe to use Project Lombok? [closed]
... As a Lombok developer, I can say that generating javadoc is technically possible. Please participate in the google group if you've any bright ideas how to implement it. I mean, just generating a standard text is not that useful. Like getFoo, returns foo, setFoo sets the foo? How is that goi...