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diff --git a/STL/readme2.stl b/STL/readme2.stl deleted file mode 100644 index 5132bc1189b..00000000000 --- a/STL/readme2.stl +++ /dev/null @@ -1,272 +0,0 @@ -STL2.ZIP - -Standard Template Library for Visual C++ 4.0 -and Related Classes - -Revised 10/15/96 - Bug fixes and change to bit_vector. - -This version supports DLLs and threading. You must use critical -sections around code that uses the same container in different -threads. These features come at a price -- since memory -usage is not optimal, this code may use more memory and -may be slower. - -+ General strategy: Remove all statics except the - static allocator objects. -+ Vectors were not affected. -+ Major changes made to tree.h -+ Stability: Very stable. - -This code should be considered for experimental use only. There -are still statics lurking in some functions; these functions -are not thread-safe. - -------------------------- -Fix for bit_vector -------------------------- -This version also has a fix for bit_vector, which doesn't really -work with VC++ 4.x. Please include bvector.cpp in your -project if you use bit_vector. This fixes the linker errors -that occur if you use bector.h in multiple .cpp files. - -------------------------- -Disclaimer -------------------------- -Code is provided without warranty, liability, or technical support. - -STL.H and PTR.H are freely distributable and can be -modified in any way. - --------------------------------- -STRING.H does not compile. --------------------------------- - -"D. Pirzadeh" <ddp@crl.com> Explains how to fix: - -First, I got compile errors in "bstring.h" -and changed it as follows to correct: - line 1104 "::reserve" -> "std::reserve" - line 1110 "::default_size" -> "std::default_size" - -Also, I got an INTERNAL COMPILER ERROR with Visual C++ v4.0 when I did the fol- -lowing: - class xyz : public std::string { } - -I fixed it with: - typedef std::string XyzString; - class xyz : public XyzString { } - --------------------------------- -Changes made to STL distribution --------------------------------- - -These files were modified from the STL distribution shipped with -Microsoft Visual C++ 4.0. The files here are a complete, -working version of the STL. These files have been tested with -MFC applications. - -Changes were made to practically all header files. Look for -comments like: - -*Added by... -*Changed by... - ------------------- -Usage Instructions ------------------- - -Set the preprocessor variable NOMINMAX. - -As Microsoft recommends, the STL is compiled in the std namespace. - -When including these files, do **not** do this: - - namespace std - { - #include <vector.h> - } - -Instead, do this: - - #include <vector.h> - -Recommended usage: - - First, include: - - #include <afxwin.h> - #include <afxext.h> - #include <afxtempl.h> - - Then include the STL header files. - -------------------- -Support for CString -------------------- -The stl.h file contains code written by me. The file contains -operators that will allow you to use CString objects with STL -containers and functions. - -!!!! CString will not work with STL unless you include <stl.h> !!!! - -------------------------------------------- -Helper functions for pointers-in-containers -------------------------------------------- -There is a file called stl.h which contains two functions: - SequenceDelete - MapDelete -These functions send "delete" to all of the objects in a container. - -If you don't like this approach, you can use a supplied "pointer -wrapper" class. - -There is a file called ptr.h which contains a class called Ptr -that can be used exactly like a pointer. The object has a pointer -inside it that points to an object of any class. When a Ptr object -is deleted, "delete" is sent to its underlying pointer. Ptr can be -used with any STL container, as it has a copy constructor and -assignment operator, which transfers "ownership" of the pointer from -the source object to the destination object. Ptr is from the book -Design Patterns by Gamma et al -- see the Proxy pattern. - -The Ptr class makes memory leaks impossible, because it deletes -objects automatically when the container is deleted, or when -functions like "delete" are used. - -Example: - - This is a vector of CStrings: - - std::vector< Ptr<CString> > StringVector; - - StringVector.push_back( Ptr( new CString( "hello" ) ) ); - StringVector.push_back( Ptr( new CString( "This is another string" ) ) ); - ------------------------- -Common Problems with STL ------------------------- - -1) Compiler error: != is ambiguous - - Solution: put the following line at the beginning of the method - that caused the error: - - using namespace std; - -2) When using maps, the debugger crashes. - - This is because symbols for maps (actually, for the "pair") - get truncated to 255 characters. Solution: Turn off the - variables window in the debugger. Don't try to look at - a symbol that has been truncated. This is not an STL-specific - bug -- It's a bug in the debugger. - -3) All sorts of compile errors in STL header files - - Make sure the preprocessor variable NOMINMAX is defined - - -4) Compiler errors about "operator < is not available", etc. - The class involved has global comparison operators. - - Solution: - Write "routers" in the std namespace to the global namespace. - Example (see also stl.h - this is how CString is able - to work with STL): - - namespace std - { - BOOL operator < ( const MyClass & rLhs, - const AnotherClass & rRhs ) - { - return ::operator < ( rLhs, rRhs ); - } - } - - See also 5. - -5) When you use find() or another algorithm, the compiler - complains that it cannot find the == or < operators. - -If your code compiles without any error messages, then disregard -this section. However, if you get errors like "cannot convert -first argument from const class X" then read on. - -I am assuming that your code is calling an STL algorithm like -std::sort() or std::find(). If you're not, I can't help -you. - -There is apparently a bug in the Microsoft compiler regarding -namespaces. Namespaces cannot locate global -functions that reside in the global namespace. For example, -the binary == operator. - -Maybe this is a bug, maybe it isn't. This is not clear -to me. However, I do know what works and have tried many other -approaches that do not work. If you have a better solution I -would appreciate it if you could let me know about it. - -So, if you declare your own class and want to use algorithms -like find() on an STL container, you have two choices: - -(1) Declare == as a member function. -(2) Declare global operators == and !=. - -(1) simply works. There will come a time, however, when (1) -won't satisfy your needs. If A == B, then B == A. You can't -do this using member functions if A and B are from different -classes. - -If you choose (2), you must add the != operator to the std -namespace. There are two ways to do this. First, you can do -this: - namespace std - { - inline operator != ( const MyClass &rLhs, const MyClass &rRhs ) - { - return ::operator != ( rLhs, rRhs ); - } - } -This "routes" != from the std namespace to the global namespace. - -Note that ( lhs != rhs ) can be derived from the == operator -as !( lhs == rhs ). There is a macro in STL.H, -STL_DECLARE_GLOBAL_NE, that does this derivation. -This derivation will not work when for whatever reason, !(lhs == rhs) -is not the same as ( lhs != rhs ). - -The following example shows what you have to do for find(). Other -algorithms require you to declare <, <=, and >= too. See the -macros STL_DECLARE_GLOBAL_GE, STL_DECLARE_GLOBAL_LT, and -STL_GLOBAL_LE. These macros derive new comparison operators -from "operator <( const T&, const T& )". - -class MyClass -{ - public: - - int units; - CString description; -}; - -// We want to be able to test two MyClass objects against each other -// in STL. Need to create a global operator for this purpose. -// Since we use find(), we need to declare not-equal too. -bool operator == ( const MyClass &, const MyClass & ); -STL_DECLARE_GLOBAL_NE( MyClass, MyClass ) - -// These operators test for a matching description. -// We do A == B and B == A to be consistent. -bool operator == ( const MyClass&, const CString & ); -bool operator == ( const CString&, const MyClass & ); -STL_DECLARE_GLOBAL_NE( MyClass, CString ) -STL_DECLARE_GLOBAL_NE( CString, MyClass ) - -6. Errors when creating vectors that have vectors and deques - that have deques. - - Solution: Provide atruments to the constructor. - - std::vector< std::vector<int> > - TwoDimensional( 0, std::vector<int>() ); - |