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In many computer programming languages, a do while loop is a control flow statement that executes a block of code and then either repeats the block or exits the loop depending on a given boolean condition. The do while construct consists of a process symbol and a condition. First the code within the block is executed.
The repeat statement repetitively executes a block of one or more statements through an until statement and continues repeating unless the condition is false. The main difference between the two is the while loop may execute zero times if the condition is initially false, the repeat-until loop always executes at least once.
This is a legacy of C, where the for statement is basically syntactic sugar for a while statement. The getter and setter of a property may implement separate interfaces. In VB you'd have to define two properties instead: a read-only property implementing one interface, and a write-only property implementing the other interface.
Statement separator – demarcates the boundary between two statements; need needed for the last statement; Line continuation – escapes a newline to continue a statement on the next line; Some languages define a special character as a terminator while some, called line-oriented, rely on the newline.
If xxx1 is omitted, we get a loop with the test at the top (a traditional while loop). If xxx2 is omitted, we get a loop with the test at the bottom, equivalent to a do while loop in many languages. If while is omitted, we get an infinite loop. The construction here can be thought of as a do loop with the while check in the middle. Hence this ...
LotusScript is a VBA variant available in Lotus SmartSuite and Lotus Notes. Later versions of Corel WordPerfect Office implement access to VBA as one of the macro/scripting languages, the other major ones being CorelScript and PerfectScript. Earlier versions of Microsoft Word use a variant of VB called WordBasic.
Since VBA runs in process with the application it is automating VBA programs often run faster that out of process compiled programs. Many compiled programs also load large libraries used for COM support. VBA is a descentant of Microsoft's Visual Basic and therefor has it's roots in the Beginner's All-purpose Symbolic Instruction Code. Like ...
Another, less common, use of macros is to do the reverse: to map a sequence of instructions to a macro string. This was the approach taken by the STAGE2 Mobile Programming System , which used a rudimentary macro compiler (called SIMCMP) to map the specific instruction set of a given computer into machine-independent macros.