lvalue
Regarding lvalue-to-rvalue conversion, when is it required?
I\'ve been reading quite many on the Internet and it seems that many people mentioned the following rules (but i couldn\'t find it in the standard),[详细]
2023-02-12 20:55 分类:问答Expression must be a modifiable lvalue pointer-to-char parameter
This is the whole code. Upon compiling I get the error below: error LNK2019: unresolved external symbol \"void __cdecl CandyBarFunc(struct CandyBar &,char const *,double,int)\" (?CandyBarFunc@@Y[详细]
2023-02-10 10:06 分类:问答Why pre-increment operator gives rvalue in C?
In C++, pre-increment operator gives lvalue because incremented object itself is returned, not a copy.[详细]
2023-02-06 14:51 分类:问答C++0x: rvalue reference versus non-const lvalue
When programming in C++03, we can\'t pass an unnamed temporary T() to a function void foo(T&);.The usual solution is to give the temporary a name, and then pass it like:[详细]
2023-02-01 04:15 分类:问答gcc confused about what's an lvalue?
gcc is giving me invalid lvalue in assignment errors for: -2[(size_t *)new] = 0; Changing the code to the following makes it开发者_如何学编程 go away:[详细]
2023-01-29 12:24 分类:问答How to change the value of an NSMutableArray at a particular index
[array objectAtIndex:i]开发者_运维技巧 doesn\'t work as an L value, so it can\'t be used to set the object at index i.Use -insertObject:atIndex: or replaceObjectAtIndex:withObject:.[详细]
2023-01-21 09:43 分类:问答Difference between C++ const references and consts?
What is the difference between: const double& pi 开发者_运维问答= 3.14; and (no ampersand): const double pi = 3.14;[详细]
2023-01-20 08:25 分类:问答Correlation between specifier and qualifier?
const and volatile are called cv-qualifier by the C spec. What is exactly defference between specifier and qualifier (cv-qualifier)? Is a qualifier is a specifier as well?[详细]
2023-01-14 02:06 分类:问答Where in the C++ Standard does it say ::delete can change lvalues?
I ran into my first compiler that changes the lvalue passed to ::delete, but doesn\'t zero out the lvalue. That is the following is true:[详细]
2023-01-09 18:27 分类:问答Objective C - Lvalue required as left operand of assignment
I get the error (L开发者_运维技巧value required as left operand of assignment) for this code: [[addAlertViewController alertsArray] = [NSMutableArray arrayWithObjects:nil] retain];[详细]
2023-01-06 18:24 分类:问答