大约有 43,000 项符合查询结果（耗时：0.0617秒） [XML]
Understanding why Zipper is a Comonad
...viewed as a comonad just as well (in multiple ways), while a Zipper can be cast as a monad (also in many ways). The difference is in whether you are conceptually focused on "appending" data constructively to a state machine (that's what the Monad interface is about), or "extracting" state from it "d...
How are virtual functions and vtable implemented?
...more constant table
&vtableFoo, // can dynamic_cast to Foo
(void(*)(Foo*)) destructBar, // must cast type to avoid errors
(int(*)(Foo*)) aBar
};
void constructBar(Bar* self) { // Bar::Bar()
self->base.vtable = &vtableBar; // point to Bar vtable
}
...
Would it be beneficial to begin using instancetype instead of id?
...eclare fileHandleWithStandardOutput as returning an instancetype. Then the cast or assignment isn't necessary.
(Note that on iOS, this example won't produce an error as only NSFileHandle provides a writeData: there. Other examples exist, such as length, which returns a CGFloat from UILayoutSupport ...
Android - print full exception backtrace to log
...
In the context of Android, I had to cast the Exception to a String:
try {
url = new URL(REGISTRATION_PATH);
urlConnection = (HttpURLConnection) url.openConnection();
} catch(MalformedURLException e) {
Log.i("MALFORMED URL", String.valueOf(e));
} ca...
Add padding on view programmatically
...id.com/guide/practices/… The 0.5 is used to get the closest integer when casting (instead of using Math.round())
– Jave
Sep 27 '13 at 7:17
...
What is the most effective way for float and double comparison?
...
// The mask for the sign bit.
static const Bits kSignBitMask = static_cast<Bits>(1) << (kBitCount - 1);
// The mask for the fraction bits.
static const Bits kFractionBitMask =
~static_cast<Bits>(0) >> (kExponentBitCount + 1);
// The mask for the exponent bits...
Get path of executable
...char> char_vector;
char_vector buf(1024, 0);
uint32_t size = static_cast<uint32_t>(buf.size());
bool havePath = false;
bool shouldContinue = true;
do
{
int result = _NSGetExecutablePath(&buf[0], &size);
if (result == -1)
{
buf.resize(size + 1);
st...
Jinja2 template variable if None Object set a default value
...According to docs you can just do:
{{ p|default('', true) }}
Cause None casts to False in boolean context.
Update: As lindes mentioned, it works only for simple data types.
share
|
improve thi...
List to array conversion to use ravel() function
...your (nested, I s'pose?) list, you can do that directly, numpy will do the casting for you:
L = [[1,None,3],["The", "quick", object]]
np.ravel(L)
# array([1, None, 3, 'The', 'quick', <class 'object'>], dtype=object)
Also worth mentioning that you needn't go through numpy at all.
...
How do I load an org.w3c.dom.Document from XML in a string?
...
shouldn't there be casting return (Document) builder.parse(new ByteArrayInputStream(xml.getBytes()));??
– InfantPro'Aravind'
Jan 16 '13 at 14:10
...