C Iterators. This is a quick summary of iterators in the Standard Template Library. For information on defining iterators for new containers, see here. Iterator: a pointer-like object that can be incremented with , dereferenced with., and compared against another iterator with!=. Iterators are generated by STL container member functions, such as begin and end. Mar 02, 2016 4 Answers. And so, it can't be dereferenced. You can dereference the last element in the sequence (which would be -vectorOfObjects.end ), but not an iterator pointing past the end. Finally, the underlying problem/confusion might be that you think an iterator can be converted to a pointer. In general, it can't.
Where problem can be any of the following relating to problems with the various attributes of:unexpected import directive value attribute 'attribute'A value was supplied for the indicated attribute. None was expected.missing ')' in import directive attribute 'attribute'The value for the indicated attribute was incorrectly specified: a closing parenthesis is missing.unrecognized import directive attribute 'attribute'The indicated token is not a legitimate attribute for the #import directive.invalid values for rawpropertyprefixes attributeThe values for the rawpropertyprefixes attribute were incorrectly specified.unexpected duplicate property 'property'The indicated #import attribute was specified more than once - this is an. The total working storage is exhausted.This error can occur in the following circumstances:. Not enough virtual memory is available for compiling a particular file. In this case, shut down any other concurrent applications.
You may also try to reconfigure your machine for more available virtual memory, or break up the source file being compiled into smaller separate components. You can also compile the file on a system with more available RAM. The compiler has encountered an exceedingly complex or long expression at the line indicated and has insufficient reserves to parse it. Break the expression down into separate statements.
You must qualify the member reference with the appropriate base class name.In C class 'class', member 'member' can be found in more than one base class, and it was not qualified to indicate which one you meant.This applies only in multiple inheritance, where the member name in each base class is not hidden by the same member name in a derived class on the same path.The C language rules require that this test for ambiguity be made before checking for access rights (private, protected, public).It is possible to get this message even though only one (or. The sum of the global data declarations exceeds 64K bytes. This includes any data stored in the DGROUP (all global variables, literal strings, and static locals).SolutionsCheck the declarations for any array that might be too large. You can also remove variables from the DGROUP.Here's how:. Declare the variables as automatic.
This uses stack space. Dynamically allocate memory from the heap using calloc, malloc, or farmalloc for the variables. This requires the use of pointers.Literal strings are also put in the DGROUP. Get the file farstr.zip from our BBS to extract literal strings into their own segment. An identifier was expected here, but not found.In C, an identifier is expected in the following situations:.
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in a list of parameters in an old-style function header. after the reserved words struct or union when the braces are not present, and.
as the name of a member in a structure or union (except for bit fields of width 0).In C, an identifier is also expected in these situations:. in a list of base classes from which another class is derived, following a double colon (::), and. after the reserved word 'operator' when no operator symbol is present. When the following occurs1.A C class 'class1' contains a member of class 'class2,'and2.You want to construct an object of type 'class1' (but not from another object of type 'class1'). There must be a constructor class2::class2 so that the member can be constructed.This constructor without parameters is called the default constructor.The compiler will supply a default constructor automatically unless you have defined any constructor for class 'class2'.In that case, the compiler will not supply the default constructor automatically ( you must supply one. The types of the expressions on both sides of the colon in the conditional expression operator (?:) must be the same, except for the usual conversions.These are some examples of usual conversions. char to int.
float to double. void.
to a particular pointerIn this expression, the two sides evaluate to different types that are not automatically converted.This might be an error or you might merely need to cast one side to the type of the other.When compiling C programs, this message is always preceded by another message that explains the exact reason for the type mismatch. If either of these errors occur, it indicates a catastrophic failure of the CodeGear tools. You should contact CodeGear to report the problem and to find a potential work around for your specific case. By isolating the test case as well as possible, you will increase the chance for either CodeGear or yourself to find a work around for the problem.Commonly, compiler failures can be worked around by moving the source code that is currently being compiled.
Simple cases might be switching the order of variable declarations, or functions within the source module. Moving the scope and storage of.
If you define a function in a namespace, which has a name that might be replaced by a call to an intrinsic when -Oi is on, it is not permitted to have a 'using' declaration which refers to that member.For example, calls to 'strcmp' are replaced by the intrinsic 'strcmp' when -Oi is on. This means that the declaration 'using N::strcmp;' would become 'using N::strcmp', since the token replacement happens before the compiler's parser ever sees the tokens.An error displays in this case, because the compiler doesn't know how to process 'N::strcmp'. You are trying to reference C class member 'member,' but it is private or protected and can't be referenced from this function.This sometimes happens when you attempt to call one accessible overloaded member function (or constructor), but the arguments match an inaccessible function.The check for overload resolution is always made before checking for accessibility.If this is the problem, try an explicit cast of one or more parameters to select the desired accessible function.Virtual base class constructors must be accessible within the scope of the most derived class. This is because C always constructs virtual base classes. Whenever a C derived class 'class2' is constructed, each base class 'class1' must first be constructed.If the constructor for 'class2' does not specify a constructor for 'class1' (as part of 'class2's' header), there must be a constructor class1::class1 for the base class.This constructor without parameters is called the default constructor.The compiler will supply a default constructor automatically unless you have defined any constructor for class 'class1'.In that case, the compiler will not supply the default constructor automatically-you must supply one. To ensure interoperability between Delphi and C, there are restrictions on the type names mentioned in the parameter lists of published closure types.
The parameter types have to be simple type names with optional const modifier and pointer or reference notation.So when declaring a closure type, the arguments passed to that closure must be of a simple type. For example, templates are not accepted. To pass a reference to an object of template type to a closure, you must declare a typedef, which counts as a simple type name. When a small or medium memory model program exits, a check is made to determine if the contents of the first few bytes within the program's data segment have changed. These bytes would never be altered by a working program. If they have been changed, this message is displayed to inform you that (most likely) a value was stored to an uninitialized pointer.The program might appear to work properly in all other respects; however, this is a serious bug which should be attended to immediately. Failure to correct an uninitialized pointer can lead to unpredictable behavior (including locking the.
Floating-point formats contain formatting information that is used to manipulate floating-point numbers in certain runtime library functions, such as scanf and atof. Typically, you should avoid linking the floating-point formats (which take up about 1K) unless they are required by your application. However, you must explicitly link the floating-point formats for programs that manipulate fields in a limited and specific way.Refer to the following list of potential causes (listed from most common to least common) to determine how to resolve this error:.
CAUSE: Floating point set to None. You set the floating-point option to None when it should. (Command-line option to suppress warning: -w-com)This warning message is issued when a C // comment is continued onto the next line with backslash line continuation.The intention is to warn about cases where lines containing source code unintentionally become part of a comment because that comment happened to end in a backslash.If you get this warning, check carefully whether you intend the line after the // comment to be part of the comment. If you don't, either remove the backslash or put some other character after it.
If you do, it's probably better coding style to start the. (Command-line option to display warning: -wuse)The specified identifier was never used. This message can occur in the case of either local or static variables. It occurs when the source file declares the named local or static variable as part of the block just ending, but the variable was never used.In the case of local variables, this warning occurs when the compiler encounters the closing brace of the compound statement or function.
In the case of static variables, this warning occurs when the compiler encounters the end of the source file.For example. (Command-line option to suppress warning: -w-ias)When you use set the Far Data Threshold option, the compiler automatically makes any global variables that are larger than the threshold size be far.When the variable is an initialized array with an unspecified size, its total size is not known when the compiler must decide whether to make it near or far, so the compiler makes it near.The compiler issues this warning if the number of initializers given for the array causes the total variable size to exceed the data size threshold.If the fact that the compiler made the variable. (Command-line option to suppress warning: -w-nst)In previous versions of the C specification, typedef and tag names declared inside classes were directly visible in the global scope.In the latest specification of C, these names must be prefixed with class::qualifier if they are to be used outside of their class scope.The compiler issues this warning whenever a name is uniquely defined in a single class.
The compiler permits this usage without class:. This allows older versions of code to compile. (Command-line option to suppress warning: -w-lvc)In C, a variable or parameter of reference type must be assigned a reference to an object of the same type. If the types do not match, the actual value is assigned to a temporary of the correct type, and the address of the temporary is assigned to the reference variable or parameter.The warning means that the reference variable or parameter does not refer to what you expect, but to a temporary variable, otherwise unused.In the following example, function f requires a reference to an int, and c is a char. (Command-line option to suppress warning: -w-lvc)In C, a variable or parameter of reference type must be assigned a reference to an object of the same type.
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If the types do not match, the actual value is assigned to a temporary of the correct type, and the address of the temporary is assigned to the reference variable or parameter.The warning means that the reference variable or parameter does not refer to what you expect, but to a temporary variable, otherwise unused.In the following example, function f requires a reference to an int, and c is a char. (Command-line option to suppress warning: -w-lin)In C, a variable or parameter of reference type must be assigned a reference to an object of the same type.If the types do not match, the actual value is assigned to a temporary of the correct type, and the address of the temporary is assigned to the reference variable or parameter.The warning means that the reference variable or parameter does not refer to what you expect, but to a temporary variable, otherwise unused.ExampleIn this example, function f requires a reference to an int, and c is a char. (Command-line option to suppress warning: -w-pck)This warning message is issued when the structure alignment is different after including a file than it was before including that file.The intention is to warn you about cases where an include file changes structure packing, but by mistake doesn't restore the original setting at the end. If this is intentional, you can give a #pragma nopackwarning directive at the end of an include file to disable the warning for this file.The warning can be disabled altogether by #pragma warn -pck. Also: Functions taking class by value arguments are not expanded inline(Command-line option to suppress warning: -w-inl)Exception specifications are not expanded inline: Check your inline code for lines containing exception specification.Functions taking class-by-value argument(s) are not expanded inline: When exception handling is enabled, functions that take class arguments by value cannot be expanded inline.Note:Functions taking class parameters by reference are not subject to this restriction. (Command-line option to suppress warning: -w-pch)This warning is issued when pre-compiled headers are enabled but the compiler could not generate one, for one of the following reasons:Reason Explanationwrite failedThe compiler could not write to the pre-compiled header file. This occurs if you specified an invalid location to cache precompiled headers or if the disk is full.code in headerOne of the headers contained a non-inline function body.initialized data in headerOne of the headers contained a global variable definition (in C, a global variable with an initializer; in C any variable not declared as 'extern').header incompleteThe.