I'm creating an employee leave form, with 3 categories of permissions coming from another table, namely: "Terlambat", "Pulang Cepat ", "Sakit". select ...
I'm creating an employee leave form, with 3 categories of permissions coming from another table, namely: "Terlambat", "Pulang Cepat ", "Sakit". select ...
This question is not about how to avoid the described warning. (Store in a reference beforehand; Or use dynamic_cast instead of typeid) I'm trying to ...
In the following code, I understand that the value category of the argument passed in the constructor of var1 is an l-value, var2 is an x-value and ...
The code is: class A { public: void f() { cout << this; } }; int main() { A{}; // prvalue A{}.f(); // Is A{} in here converted to xv ...
C++ Templates - The Complete Guide, in §C.1, reads Overload resolution is performed to find the best candidate. If there is one, it is selecte ...
From cppreference, I am trying to understand expressions that yield xvalues, and I ended up with this summary: The following expressions are xvalu ...
Consider the following code: In the main function, foo.val() is sometimes used as lvalue and sometimes as rvalue. I would like to to put logic insi ...
Studying for an exam in my programming languages class. Came across this excerpt in the textbook. "The address of a variable is sometimes called its ...
Hi stackoverflow community, I'm a few months into C++ and recently I've been trying to grasp the concepts revolving around the "new" value categories ...
Recently, I came across own code that I wrote accidently this way (much simplified here): Please no comments about the questionable scheme at all! ...
There's an entry in the errata of Effective Modern C++ which says that not all names are lvalues What are these names? Specifically, is Sco ...
Let's imagine this function: I would like to know if a call to this function is evaluated as a prvalue: Is get(array_c, 2) a prvalue? According ...
I want to write class similar to below, where IteratorLike can only be dereferenced to a new value, as the iterator provides a view different to the u ...
I was reading a book about data structure implemented in C++, I dont understand a code snippet, it's part of vector class I know that std::move re ...
I thought I've managed to fully understand (with the help of other SO questions, thanks) the C++17's change regarding value categories, but now I've n ...
Look at this simple example: Why does the version with Foo compile, but with int doesn't? In other words, why does const get removed from the retur ...
The function test below is overloaded for lvalue empty strings, lvalue non-empty strings and rvalue strings. I tried to compile with Clang and GCC but ...
Should I make reference for a lambda to avoid copying it? Will this code make a copy of the lambda: and if yes, should I write it like this: P. ...
People are confused when they hear that in x has rvalue reference type, but x is an lvalue. Misunderstanding stems from the fact that identifiers ...
I'm rather confused about determiming the value category of an expression. Could you please provide the basic steps that should be taken (what should ...