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Releasing memory in Python
...than the block that you free.
In 3.x range doesn't create a list, so the test above won't create 10 million int objects. Even if it did, the int type in 3.x is basically a 2.x long, which doesn't implement a freelist.
shar...
Use of 'prototype' vs. 'this' in JavaScript?
...
Really thorough and informative answer. I did some memory tests using the object structures above (A.prototype.hey vs object this.hey) and created 1000 instances of each. The memory footprint for the object property approach was around 100kb larger compared to prototype. I then adde...
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
... mat[j][i] = mat[i][j];
}
}
Slightly more complex, but a short test shows something quite interesting on my ancient e8400 with VS2010 x64 release, testcode for MATSIZE 8192
int main() {
LARGE_INTEGER start, end, freq;
QueryPerformanceFrequency(&freq);
QueryPerformanceCou...
What is Ember RunLoop and how does it work?
...ues listed above, Ember only makes reference to the queue in their RunLoop test cases. It seems that such a queue would have been used in the SproutCore days based on some of the descriptions from the above articles about timers being the last thing to fire. In Ember, the timers queue isn't used. In...
Pointers vs. values in parameters and return values
...NewTLSServer(handler http.Handler) *Server -- instantiate a web server for testing
func Open(name string) (*File, error) -- return a file access handle
In other cases, pointers are returned just because the structure may be too large to copy by default:
func NewRGBA(r Rectangle) *RGBA -- allocat...
How to generate a random number in C++?
...
The most fundamental problem of your test application is that you call srand once and then call rand one time and exit.
The whole point of srand function is to initialize the sequence of pseudo-random numbers with a random seed.
It means that if you pass the sam...
angular.service vs angular.factory
...trollers creates hard-to-track dependencies that are difficult to mock for testing. Better to have a service manage a collection of objects for you than use new() wily-nilly.)
One more thing, they are all Singletons...
Also keep in mind that in both cases, angular is helping you manage a singleton....
When to Redis? When to MongoDB? [closed]
...m you are trying to solve, how can anyone propose a solution?
You need to test them both to see which of them satisfied your needs.
With that said, MongoDB does not require any expensive hardware. Like any other database solution, it will work better with more CPU and memory but is certainly not ...
Is floating point math broken?
...interested in before you display them.
You also need to replace equality tests with comparisons that allow some amount of tolerance, which means:
Do not do if (x == y) { ... }
Instead do if (abs(x - y) < myToleranceValue) { ... }.
where abs is the absolute value. myToleranceValue needs to ...
What's the best way to communicate between view controllers?
...Finally, not only is your BookPickerController reusable but also easier to test.
-(void) testBookPickerController {
MockBookWarehouse *myWarehouse = [[MockBookWarehouse alloc]init];
MockCheckoutController *myCheckout = [[MockCheckoutController alloc]init];
BookPickerViewController *bookP...