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Java generics T vs Object
...ct
Foo newFoo = (Foo) my.doSomething(foo);
Two advantages:
no need of casting (the compiler hides this from you)
compile time safety that works. If the Object version is used, you won't be sure that the method always returns Foo. If it returns Bar, you'll have a ClassCastException, at runtime.
...
Can an enum class be converted to the underlying type?
...you can use std::underlying_type to know the underlying type, and then use cast:
#include <type_traits> //for std::underlying_type
typedef std::underlying_type<my_fields>::type utype;
utype a = static_cast<utype>(my_fields::field);
With this, you don't have to assume the under...
How to determine CPU and memory consumption from inside a process?
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@CinCout you need a casting.. replace GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc)); with GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc));
– Sumia
...
Test if string is a number in Ruby on Rails
...ds on the ratio of false cases expected.
If they are relatively uncommon casting is definitely fastest.
If false cases are common and you are just checking for ints, comparison vs a transformed state is a good option.
If false cases are common and you are checking floats, regexp is probably the wa...
How can I convert my device token (NSData) into an NSString?
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On XCode 5 I had to cast the deviceToken to make it compile: const unsigned *tokenBytes = (const unsigned *)[deviceToken bytes];
– Ponytech
Oct 6 '13 at 21:15
...
Concept of void pointer in C programming
Is it possible to dereference a void pointer without type-casting in the C programming language?
15 Answers
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Why must a lambda expression be cast when supplied as a plain Delegate parameter
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Tired of casting lambdas over and over?
public sealed class Lambda<T>
{
public static Func<T, T> Cast = x => x;
}
public class Example
{
public void Run()
{
// Declare
var c = Lambda<Fun...
Defining Z order of views of RelativeLayout in Android
...ieve.
I you set an elevation of an element in the layout it will start to cast a shadow. If you don't want this effect you can remove the shadow with code like so:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
myView.setOutlineProvider(null);
}
I haven't found any way to re...
is it possible to select EXISTS directly as a bit?
...und.
If you must return a conditional bit 0/1 another way is to:
SELECT CAST(
CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1
ELSE 0
END
AS BIT)
Or without the cast:
SELECT
CASE
WHEN EXISTS( SELECT 1 FROM theTable WHERE theColumn LIKE 'the...
How to round an average to 2 decimal places in PostgreSQL?
... | numeric, integer | normal
(4 rows)
regress=> SELECT round( CAST(float8 '3.1415927' as numeric), 2);
round
-------
3.14
(1 row)
(In the above, note that float8 is just a shorthand alias for double precision. You can see that PostgreSQL is expanding it in the output).
You must c...