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This is equivalent to Visual Basic 6's IsNull() function. [10] Note that it is not possible to directly compare an expression for equality to System.DBNull, because any expression of the form x = DbNull will evaluate to DbNull simply because it contains a null. IsDBNull() is the only way to test for equality to System.DBNull. [12] IsEmpty ...
Java Excel API (a.k.a. JXL API) allows users to read, write, ... Sample code to write to an Excel file might look like as follows: import java.io.File; ...
As an example, VBA code written in Microsoft Access can establish references to the Excel, Word and Outlook libraries; this allows creating an application that – for instance – runs a query in Access, exports the results to Excel and analyzes them, and then formats the output as tables in a Word document or sends them as an Outlook email.
Short-circuit evaluation, minimal evaluation, or McCarthy evaluation (after John McCarthy) is the semantics of some Boolean operators in some programming languages in which the second argument is executed or evaluated only if the first argument does not suffice to determine the value of the expression: when the first argument of the AND function evaluates to false, the overall value must be ...
It also introduced the ability to write non-GUI classes in Visual Basic. With VB4 the language was separated from the GUI library, and made available as VBA, in which form it was embedded with the Office 95 suite. To ease migration of Office macros and scripts, features from WordBasic, Excel Basic and Access Basic were incorporated into the ...
Since the Leszynski naming convention is a special form of Hungarian notation the same general advantages also apply to the Leszynski convention.. The use of distinctive prefixes makes your database self-documenting; when you see frmSales in VBA code, you will know that it references a form, and when you see curSales you will know that it is a Currency variable.
NFL Week 15 features an exciting schedule, with several playoff contenders squaring off against one another. Here are our bold predictions.
NotOverridable vs sealed - for declaring methods that may not be overridden by derived classes; Overridable vs virtual - declares a method as being able to be overridden in derived classes; Overrides vs override - for marking a virtual method as overridden; Shared vs static - for declaring methods that do not require an explicit instance of an ...