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Why is “int i = 2147483647 + 1;” OK, but “byte b = 127 + 1;” is not compilable?
...t has to do with Java not supporting coercions (*). You have to add a typecast
byte b = (byte)(127 + 1);
and then it compiles.
(*) at least not of the kind String-to-integer, float-to-Time, ... Java does support coercions if they are, in a sense, non-loss (Java calls this "widening").
And no,...
How to dynamic new Anonymous Class?
...able, you could add or remove fields on the fly.
edit
Sure you can: just cast it to IDictionary<string, object>. Then you can use the indexer.
You use the same casting technique to iterate over the fields:
dynamic employee = new ExpandoObject();
employee.Name = "John Smith";
employee.Age =...
How does Java handle integer underflows and overflows and how would you check for it?
...e source type:
public int addWithOverflowCheck(int a, int b) {
// the cast of a is required, to make the + work with long precision,
// if we just added (a + b) the addition would use int precision and
// the result would be cast to long afterwards!
long result = ((long) a) + b;
...
In what cases do I use malloc and/or new?
...
malloc is not typesafe in any meaningful way. In C++ you are required to cast the return from void*. This potentially introduces a lot of problems:
#include <stdlib.h>
struct foo {
double d[5];
};
int main() {
foo *f1 = malloc(1); // error, no cast
foo *f2 = static_cast<foo*>...
Why is there no Constant feature in Java?
...onst int x = 42;
std::cout << x << std::endl;
*const_cast<int*>(&x) = 7;
std::cout << x << std::endl;
return 0;
}
outputs 42 then 7.
Although x marked as const, as a non-const alias is created, x is not a constant. Not every compiler requires ...
Method Overloading for null argument
... an explicit "null" (yet implicit null type) argument always unambiguously selects a specific overload ??
– peterk
Jul 18 '17 at 21:43
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How to convert a Collection to List?
... Just to note that there are different side effects to the two approaches: casting the collection to a list and then sorting will also sort the original collection; creating a copy will not.
– Barney
Dec 16 '15 at 1:25
...
Invalid argument supplied for foreach()
...
Please do not depend on casting as a solution,
even though others are suggesting this as a valid option to prevent an error, it might cause another one.
Be aware: If you expect a specific form of array to be returned, this might fail you. More chec...
How do you determine the size of a file in C?
...
You could probably change the return type to ssize_t and cast the size from an off_t without any trouble. It would seem to make more sense to use a ssize_t :-) (Not to be confused with size_t which is unsigned and cannot be used to indicate error.)
– Ted Perci...
C++ deprecated conversion from string constant to 'char*'
...on from const char* to char* is generally not possible without an explicit cast for safety reasons. But for backwards compatibility with C the language C++ still allows assigning a string literal to a char* and gives you a warning about this conversion being deprecated.
So, somewhere you are missin...