I’ve been trying to find a way to assign helpstrings for Enums in Visual Basic. The Class builder utility does that only for methods, events, and properties, but not for Enums.The IDL source code that corresponds to an Enum in a type library looks something like follws, and you can
This is something that expert VB developers know very well, yet every know and then an otherwise perfect VB app stops with a fatal overflow error because of Integer overflow. Consider the following code: Dim LongVariable As LongLongVariable = 256 * 256 This raises the error “Runtime Error 6, Overflow”,
Unlike other languages – such as C and Delphi – VB lacks of the capability to increment and decrement a variable. Adding this feature, in the form of reusable Function routines, is simple: Function Inc(Value As Variant, Optional Increment As Variant = 1) As Variant Value = Value + Increment
‘ Comb Sort an array of any type” CombSort is faster than all but QuickSort and close to it.’ On the other hand, the code is much simpler than QuickSort’ and can be easily customized for any array type’ This routine is based on an article appeared on the Byte’
Type SAFEARRAYBOUND cElements As Long ‘ # of elements in the array dimension lLbound As Long ‘ lower bounds of the array dimensionEnd TypeType SAFEARRAY cDims As Integer ‘ Count of dimensions in this array. fFeatures As Integer ‘ Flags used by the SAFEARRAY routines documented ‘ below. cbElements As
Option Explicit’ Class Name : BTree’ Author : John Holfelder’ Date : 17-Apr-2000 12:08 pm’ Description : This class is a way of creating Binary search’ trees. Instead of pointers we use indexes.’ Supports adding, removing and traversing the tree.’ This is just the basic logic, file processing will be
Suppose you create a vector and fill it with elements: vector MyVector;MyVector.reserve(20);for (int i=0 ; i tmp(MyVector);MyVector.swap(tmp); The vector temp has the same number of elements that MyVector has. By sapping it with the original vector MyVector, the capacity of MyVector changes accordingly. Consequently, MyVector’s capacity matches its size and
One of the common sources for bugs and security risks is using a fixed size char array as a buffer for inputting data. For example: char buff[20];cout > buff; // what if user inserts 25 characters? The problem is that if the user enters a string that has more than
The standard C library declares the function calloc() in as follows: void *calloc(size_t elements, size_t sz); calloc() allocates space for an array of elements, each of which occupies sz bytes of storage. The space of each element is initialized to binary zeros. In other words, calloc() is similar to malloc(),