August 25, 2004

DevX - Software Development Resource

Using std::vectors Efficiently

Whenever possible, use C++ arrays. Array indexing has an order of magnitude of O(1). This means that it is very fast. However, if the size of the array is not

DevX - Software Development Resource

Cache Your Repeated Calls to the Database

Use this code to cache your repeated calls to the database: Dim mLookup As Scripting.DictionaryDim cn As ADODB.ConnectionEnum enumLookup ltCustomers ltVendors ltSalespeopleEnd EnumPrivate Sub Form_Load() Dim rstest As ADODB.Recordset Set

DevX - Software Development Resource

How To Add New Rows to a Filtered DataView

Suppose you have a “view” into a set of records. One column of the data contains a country ID, (such as “US”): DataView myDataView = new DataView(myTable); myDataView.RowFilter = “country