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std::function vs template
... in cases with binding, there's a chunk of code which does the adaptation, selected by a code ptr in the function obj, and which picks up data (bound parms) from the function obj (d) the 'bound' function may be inlined into that adaptor, if the compiler can see it.
– greggo
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Android - print full exception backtrace to log
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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...
How could I convert data from string to long in c#
...er part of that number you must first convert it to a floating number then cast to long.
long l1 = (long)Convert.ToDouble("1100.25");
You can use Math class to round up the number as you like, or just truncate...
Math.Round
Math.Ceil
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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 ...
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
}
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Convert boolean result into number/integer
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@ESR it casts everything to a number but not always the number you want, if you're dealing with other truthy types. 1 | 0 = 1; 0 | 0 = 0; true | 0 = 1; false | 0 = 0; 'foo' | 0 = 0; undefined | 0 = 0
– Luke Mile...
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.
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How to calculate dp from pixels in android programmatically [duplicate]
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Use toInt() method instead of casting for Kotlin.
– kike
Jul 10 '18 at 7:34
1
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What is the most effective way for float and double comparison?
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// 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...
How to resize a custom view programmatically?
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This didn't work for me , i got a class cast exception for it .
– Tapan Thaker
Jul 6 '12 at 8:49
4
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