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C++ Dynamic Shared Library on Linux
...error());
}
Reset_dlerror();
creator = reinterpret_cast<Base_creator_t>(dlsym(handler, "create"));
Check_dlerror();
}
std::unique_ptr<Base> create() const {
return std::unique_ptr<Base>(creator());
}
~Derived_factory() {
...
What is the fastest integer division supporting division by zero no matter what the result is?
...
Awesome. Can be made constexpr and avoid needless type casts like this: template<typename T, typename U> constexpr auto fdiv( T t, U u ) -> decltype(t/(u+!u)) { return t/(u+!u); } And if you want 255, (lhs)/(rhs+!rhs) & -!rhs
– Yakk - Adam Nevr...
Is a `=default` move constructor equivalent to a member-wise move constructor?
...as rvalue reference type T&&, it is direct-initialized with static_cast(x.m);
otherwise, the base or member is direct-initialized with the corresponding base or member of x.
Virtual base class subobjects shall be initialized only once by the
implicitly-defined copy/move construct...
Reference: Comparing PHP's print and echo
...print. print e, when evaluated:
evaluates its single argument e and type-casts the resulting value to a string s. (Thus, print e is equivalent to print (string) e.)
Streams the string s to the output buffer (which eventually will be streamed to the standard output).
Evaluates to the integer 1.
D...
Using a ListAdapter to fill a LinearLayout inside a ScrollView layout
...nt position, long id) {
// You can just use listView instead of parent casted to ListView.
if (position >= ((ListView) parent).getHeaderViewsCount()) {
// Note the usage of getItemAtPosition() instead of adapter's getItem() because
// the latter does not take into account the ...
How do I initialize a TypeScript object with a JSON object
...the type map:
export function fromJson(json: string): Person {
return cast(JSON.parse(json), object("Person"));
}
I've left out some code, but you can try quicktype for the details.
What new capabilities do user-defined literals add to C++?
...ould have if these have been added to the language itself. We can even add cast operators (which is usually a bad idea, but sometimes, it's just the right solution).
We still missed one thing to have user-types behave as built-in types: user-defined literals.
So, I guess it's a natural evolution for...
Can I list-initialize a vector of move-only type?
... rather the underlying elements themselves might be const, which cannot be cast away in a well-formed program.
– underscore_d
Jul 18 '16 at 10:49
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...
When to use std::forward to forward arguments?
... }
std::string to_string (void) const {
auto address = static_cast<const void*>(this);
std::stringstream ss;
ss << address;
return "BankAccount(" + ss.str() + ", cash $" + std::to_string(cash) + ")";
}
};
template<typename T, typename Account&...
std::vector versus std::array in C++
...ding the pointer from the user of the class (in C++, arrays are implicitly cast as pointers, often to dismaying effect). The std::array<T> class also stores its size (length), which can be very useful.
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