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C# 4.0 optional out/ref arguments
.../ .. do something
if (outResult != null) {
outResult.Result = 100;
}
return value;
}
public void bar ()
{
string str = "bar";
string result;
OptionalOut<int> optional = new OptionalOut<int> ();
// example: call without the optional out parameter
...
Difference between private, public, and protected inheritance
... { return storage; }
};
int main(void) {
Super object;
object.put(100);
object.put(object.get());
cout << object.get() << endl;
return 0;
}
Now lets define a subclass:
class Sub : Super { };
int main(void) {
Sub object;
object.put(100);
object.put(ob...
Is mongodb running?
...
hmm, works for me (Ubuntu 64bit VM, Mongo v1.7.6), so I'm not sure why it's not for you tbh. If you can't get it working, best bet may be to post it on the mongodb forums: groups.google.com/group/mongodb-user
– AdaTheDev
Feb 23 ...
Test whether a list contains a specific value in Clojure
...rn false; this is what happens in (contains? :foo 1) and also (contains? '(100 101 102) 101). Update: In Clojure ≥ 1.5 contains? throws when handed an object of a type that doesn't support the intended "key membership" test.
The correct way to do what you're trying to do is as follows:
; most of...
How to read a line from the console in C?
...t read. So you use fgetc:
char * getline(void) {
char * line = malloc(100), * linep = line;
size_t lenmax = 100, len = lenmax;
int c;
if(line == NULL)
return NULL;
for(;;) {
c = fgetc(stdin);
if(c == EOF)
break;
if(--len == 0) {
...
What's the simplest way to subtract a month from a date in Python?
...f not m: m = 12
d = min(date.day, [31,
29 if y%4==0 and (not y%100==0 or y%400 == 0) else 28,
31,30,31,30,31,31,30,31,30,31][m-1])
return date.replace(day=d,month=m, year=y)
>>> for m in range(-12, 12):
print(monthdelta(datetime.now(), m))
2009-08-06 16:12...
Generate random numbers using C++11 random library
... Except that isn't uniform (0 to N-1). The reason is easy, let's suppose N=100 and RAND_MAX = 32758. There is not a way to uniformely map 32758 elements (RAND_MAX) to 100 inputs. The unique way is set a bound on 32000 and re-execute rand() if gets out of bounds
– amchacon
...
Is it possible to use argsort in descending order?
... equal items will get reversed).
Example timings:
Using a small array of 100 floats and a length 30 tail, the view method was about 15% faster
>>> avgDists = np.random.rand(100)
>>> n = 30
>>> timeit (-avgDists).argsort()[:n]
1.93 µs ± 6.68 ns per loop (mean ± std. d...
AngularJS : automatically detect change in model
...nt:
$scope.$watch('myModel', function() { ... }, true);
Update: Angular v1.2 added a new method for this, `$watchCollection():
$scope.$watchCollection('myModel', function() { ... });
Note that the word "shallow" is used to describe the comparison rather than "deep" because references are not f...
Share Large, Read-Only Numpy Array Between Multiprocessing Processes
...the array:
a = np.memmap('test.array', dtype='float32', mode='w+', shape=(100000,1000))
You can then fill this array in the same way you do with an ordinary array. For example:
a[:10,:100]=1.
a[10:,100:]=2.
The data is stored into disk when you delete the variable a.
Later on you can use mult...