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What does the Reflect object do in JavaScript?
...ants to call a function f with a variable number of arguments packed as an array args and binding the this value to obj, one can write:
f.apply(obj, args)
However, f could be an object that intentionally or unintentionally defines its own apply method. When you really want to make sure that the b...
How do I expand a tuple into variadic template function's arguments?
...riadic template function. Here is a small helper class which creates index array. It is used a lot in template metaprogramming:
// ------------- UTILITY---------------
template<int...> struct index_tuple{};
template<int I, typename IndexTuple, typename... Types>
struct make_indexes_i...
How to debug Lock wait timeout exceeded on MySQL?
...alculated from the last 4 seconds
----------
SEMAPHORES
----------
OS WAIT ARRAY INFO: reservation count 9014315, signal count 7805377
Mutex spin waits 0, rounds 11487096053, OS waits 7756855
RW-shared spins 722142, OS waits 211221; RW-excl spins 787046, OS waits 39353
------------------------
LATES...
How do I plot in real-time in a while loop using matplotlib?
...fying the signal slot mechanism to use a np.ndarry type and emitting a np.array of the relative timestamp and signal. I'm updating the xlim() on each frame draw which does fine for displaying the signal with the new axis but not the x-labels/ticks only briefly update when I change the window size. ...
How does Java handle integer underflows and overflows and how would you check for it?
... is also a well-known exploitable security issue, especially as it affects array, stack and list objects.
Overflow can occur in either a positive or negative direction where the positive or negative value would be beyond the maximum or minimum values for the primitive type in question. Overflow ca...
Expand a random range from 1–5 to 1–7
...it work? Think of it like this: imagine printing out this double-dimension array on paper, tacking it up to a dart board and randomly throwing darts at it. If you hit a non-zero value, it's a statistically random value between 1 and 7, since there are an equal number of non-zero values to choose fro...
Ways to save Backbone.js model data?
...
$donut = ...
// Looks something like this maybe:
// $donut = array('id'=>7, 'flavor'=>'chocolate', 'price'=>'1.00')
$response = $app->response();
$response['Content-Type'] = 'application/json';
$response->body(json_encode($donut));
});
Here it's important ...
Optimise PostgreSQL for fast testing
... then you can turn then off
random_page_cost: if you have SSD or fast RAID array you can lower this to 2.0 (RAID) or even lower (1.1) for SSD
checkpoint_segments: you can go higher 32 or 64 and change checkpoint_completion_target to 0.9. Lower value allows faster after-crash recovery
...
#define macro for debug printing in C?
...ywhere. Also it works when printf is not enough, say when you must dump an array or calculate some diagnosing value that is redundant to the program itself.
EDIT: Ok, it might generate a problem when there is else somewhere near that can be intercepted by this injected if. This is a version that go...
What is Ember RunLoop and how does it work?
...ing DOM elements, etc) are performed is determined by the Ember.run.queues array described above:
The run loop will start off on the first queue, which is sync. It'll run all of the actions that were scheduled into the sync queue by the Ember.run code. These actions may themselves also schedule more...