Ví dụ về việc sử dụng Rvalues trong Tiếng anh và bản dịch của chúng sang Tiếng việt
{-}
-
Colloquial
-
Ecclesiastic
-
Computer
The failures are for the rvalues literals.
C++98 rvalues are known as prvalues in C++11.
Being restricted to read from rvalues is not very useful.
Most literal values(e.g., 10 and 5.3) are also rvalues.
It is better to know rvalues can be passed to non-const rvalue references.
Most literal values(e.g., 10 and 5.3) are also rvalues.
It is better to know rvalues can be passed to non-const rvalue references.
An rvalue reference X&& is anew kind of reference that only binds to rvalues.
Numeric literals are rvalues and may not be assigned and can not appear on the left-hand side.
Scott Meyer has published avery useful rule of thumb to distinguish rvalues from lvalues.
Numeric literals are rvalues and so they may not be assigned and cannot appear on the left-hand side.
Scott Meyer has published avery useful rule of thumb to distinguish rvalues from lvalues.
In C++03, rvalues of class type have a known dynamic type- it's the static type of that expression.
We would like 17 and 29 to be forwarded to 2 because 17 and29 are integer literals and as such rvalues.
Numeric literals are rvalues and so they may not be assigned and cannot appear on the left-hand side.
We now understand that moving from lvalues is potentially dangerous,but moving from rvalues is harmless.
You might expect T&& to only bind to rvalues, because at first glance, it looks like an rvalue reference.
A prvalue is really just the new name for the previous type of rvalue,i.e. they're the rvalues that aren't xvalues.
We just divided the rvalues into two subgroups, xvalues and prvalues, and we refer to lvalues and xvalues as glvalues.
This move constructor does exactly what the auto_ptr copy constructor did,but it can only be supplied with rvalues.
We just divided the rvalues into two subgroups, xvalues and prvalues, and we refer to lvalues and xvalues as glvalues.
It wasn't necessary to copy it because x+ y is an rvalue, and again,it is okay to move from string objects denoted by rvalues.
An rvalue(so called, historically, because rvalues could appear on the right-hand side of an assignment expression) is an xvalue, a.
And two groupings are done to capture those that can be qualified and can have different dynamic types(glvalues)and those where overloading prefers rvalue reference binding(rvalues).
Conceptually(and typically also in fact), rvalues correspond to temporary objects, such as those returned from functions or created through implicit type conversions.
We can gain some intuition of the concepts of valuecategories if we quote the subsection titled Lvalues and rvalues from the working draft N3337(the most similar draft to the published ISOC++11 standard).
On the other hand, moving from rvalues such as make_triangle() is perfectly safe, because after the copy constructor has done its job, we cannot use the temporary again.
An rvalue(so-called, historically, because rvalues could appear on the right-hand side of an assignment expression) is an xvalue, a temporary object or subobject thereof, or a value that is not associated with an object.
An rvalue(so-called, historically, because rvalues could appear on the right-hand side of an assignment expression) is an xvalue, a temporary object or subobject thereof, or a value that is not associated with an object.