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Why don't Java Generics support primitive types?
...de both behavioral parametricity (generic methods) and data parametricity (raw and wildcard instantiations of generic types.)
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a homogeneous translation strategy was chosen, where generic type variables are erased to their bounds as they are incorporated into bytecode. This means that wheth...
_=> what does this underscore mean in Lambda expressions?
...ers are perfectly fine. That's the case with For-loops and the "i" and "j" letters as indexers.
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How to see if an NSString starts with a certain other string?
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This is my solution to the problem. It will remove the letters that are not necessary and is case insensitive.
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
return [self generateSectionTitles];
}
-(NSArray *)generateSectionTitles {
NSArray ...
How to ignore whitespace in a regular expression subject string?
...regex is so strict for only cats, it can also be writing for any search of letters like this : ^([a-z]\s*)+$
– Sandeep Kaur
Dec 10 '19 at 5:24
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Finding quaternion representing the rotation from one vector to another
...rself).
// N.B. the arguments are _not_ axis and angle, but rather the
// raw scalar-vector components.
Quaternion(float w, Vector3 xyz);
Quaternion get_rotation_between(Vector3 u, Vector3 v)
{
// It is important that the inputs are of equal length when
// calculating the half-way vector.
u ...
Is this a “good enough” random algorithm; why isn't it used if it's faster?
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+1 for numerical data - although looking on raw numbers can be misleading as it does not mean that they have statistically significant difference.
– Maciej Piechotka
Jan 24 '13 at 1:40
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Creating an instance of class
... type Foo in dynamic memory. foo1 points to it. Normally, you wouldn't use raw pointers in C++, but rather a smart pointer. If Foo was a POD-type, this would perform value-initialization (it doesn't apply here).
/* 2 */ Foo* foo2 = new Foo;
Identical to before, because Foo is not a POD type.
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Bulk insert with SQLAlchemy ORM
...em directly, we can produce an INSERT that is
competitive with using the raw database API directly.
Alternatively, the SQLAlchemy ORM offers the Bulk Operations suite of
methods, which provide hooks into subsections of the unit of work
process in order to emit Core-level INSERT and UPDATE...
What's the difference between ngModel.$modelValue and ngModel.$viewValue
...sion of the value, the value you see in the model, while $viewValue is the raw version.
To take this one step further imagine we do something that changes the $modelValue. Angular sees this change and calls $formatters to create an updated $viewValue (based on the new $modelValue) to be sent to th...
What is causing “Unable to allocate memory for pool” in PHP?
... more efficient to keep opcode in ram rather than having the corresponding raw php in file cache.
Nowadays we can find dedicated servers with 24Gb of memory for as low as $80/month, so don't hesitate to allow several GB to APC. I put 2GB out of 24GB on a server hosting 5Magento stores and ~40 wordpr...