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Python (and Python C API): __new__ versus __init__
...een 0 and size.
class ModularTuple(tuple):
def __new__(cls, tup, size=100):
tup = (int(x) % size for x in tup)
return super(ModularTuple, cls).__new__(cls, tup)
You simply can't do this with __init__ -- if you tried to modify self in __init__, the interpreter would complain th...
Avoiding if statement inside a for loop?
...
for(int i=0;i<100;i++){cout<<"Thank you!"<<endl;} :D This is the kind of solution I was looking for, it works like a charm :) You could improve it with few comments (had problems understanding it at first), but I got it so no p...
Boost Statechart vs. Meta State Machine
...ew ballpark numbers:
Most current PC hardware will easily cope with >100'000 events per second
Even very resource-constrained hardware will be able to process a few hundred events per second.
Regarding CPU load, if the number of events to process is much lower than these numbers, Boost.State...
How do you organize your version control repository?
...ow many project do you plan to put into this one big repository? 2? 3? 10? 100?
And what do you do when you cancel the development of one project? Just delete it from repository tree so that it will become hard to find in the future. Or leave it lying around forever? Or when you want to move one pr...
What is the best way to deal with the NSDateFormatter locale “feechur”?
...
+100
Instead of subclassing, you could create an NSDateFormatter category with an additional initializer that takes care of assigning the...
Use numpy array in shared memory for multiprocessing
...()
logger.setLevel(logging.INFO)
# create shared array
N, M = 100, 11
shared_arr = mp.Array(ctypes.c_double, N)
arr = tonumpyarray(shared_arr)
# fill with random values
arr[:] = np.random.uniform(size=N)
arr_orig = arr.copy()
# write to arr from different proce...
How to increment a pointer address and pointer's value?
...you're asking for, e.g.:
#include <stdio.h>
int main() {
int a = 100;
int *p = &a;
printf("%p\n",(void*)p);
++(*p++);
printf("%p\n",(void*)p);
printf("%d\n",a);
return 0;
}
It's not modifying the same thing twice before a sequence point. I don't think it's good style thou...
What is a “callback” in C and how are they implemented?
...* A possible callback */
int overNineThousand(void) {
return (rand() % 1000) + 9001;
}
/* Another possible callback. */
int meaningOfLife(void) {
return 42;
}
/* Here we call PrintTwoNumbers() with three different callbacks. */
int main(void) {
PrintTwoNumbers(&rand);
PrintTwoN...
Why does the MongoDB Java driver use a random number generator in a conditional?
...een new 'questions' would show up, and they would show up in a batch, like 100 of them in a row.
The programmer was happy with how the program was working, but he wanted some way of maybe improving the software in the future, if possible new questions were discovered.
So, the solution was to log u...
How do I find Waldo with Mathematica?
...ch image.
Obtaining enough training examples. SVMs work best with at least 100 examples of each class. Commercial applications of boosting (e.g., the face-focusing in digital cameras) are trained on millions of positive and negative examples.
A quick Google image search turns up some good data -- ...