Variables
The following statements and functions are for working with variables. You can use these functions to declare or define variables, convert variables from one type to another, or determine the variable type.
CCur Function
Converts a string expression or numeric expression to a currency expression. The locale settings are used for decimal separators and currency symbols.
CBool Function
Converts an expression or a set of expressions into a boolean. An expression is composed of strings, numbers and operators. Comparison, logical or mathematical operators are allowed inside expressions.
CDate Function
Converts any string or numeric expression to a date value.
CDec Function
Converts a string expression or numeric expression to a decimal expression.
CDbl Function
Converts a numeric expression or string expression to a double type.
CInt Function
Converts any string or numeric expression to an integer.
CLng Function
Converts any string or numeric expression to a long integer.
Const Statement
Defines one or more identifiers as constants.
CSng Function
Converts any string or numeric expression to data type Single.
CStr Function
Converts a numeric expression to a string expression.
CVar Function
Converts a string expression or numeric expression to a variant expression.
CVErr Function
Converts a string expression or numeric expression to a variant expression of the sub-type "Error".
DefBool Statement
If no type-declaration character or keyword is specified, the DefBool statement sets the default data type for variables, according to a letter range.
DefCur Statement
If no type-declaration character or keyword is specified, the DefCur statement sets the default variable type, according to a letter range.
DefDate Statement
If no type-declaration character or keyword is specified, the DefDate statement sets the default variable type, according to a letter range.
DefDbl Statement
Sets the default variable type, according to a letter range, if no type-declaration character or keyword is specified.
DefErr Statement
If no type-declaration character or keyword is specified, the DefErr statement sets the default variable type, according to a letter range.
DefInt Statement
Sets the default variable type, according to a letter range, if no type-declaration character or keyword is specified.
DefLng Statement
Sets the default variable type, according to a letter range, if no type-declaration character or keyword is specified.
DefObj Statement
Sets the default variable type, according to a letter range, if no type-declaration character or keyword is specified.
DefSng Statement
If no type-declaration character or keyword is specified, the DefSng statement sets the default variable type, according to a letter range.
DefStr Statement
If no type-declaration character or keyword is specified, the DefStr statement sets the default variable type, according to a letter range.
DefVar Statement
Sets the default variable type, according to a letter range, if no type-declaration character or keyword is specified.
Dim Statement
Declares variables or arrays.
ReDim Statement
Declares or redefines variables or arrays.
Type Statement
Define non-UNO data structures.
IsArray Function
Determines if a variable is a data field in an array.
IsDate Function
Tests if a numeric or string expression can be converted to a Date variable.
IsEmpty Function
Tests if a Variant variable contains the Empty value. The Empty value indicates that the variable is not initialised.
IsError Function
Tests if a variable contains an error value.
IsNull Function
Tests if a Variant contains the special Null value, indicating that the variable does not contain data.
IsNumeric Function
Tests if an expression is a number. If the expression is a number, the function returns True, otherwise the function returns False.
IsObject Function
Tests if a variable is an object, as opposed to primitive data types such as dates, numbers, texts. The function returns True if the variable is an object, otherwise it returns False.
LBound Function
Returns the lower boundary of an array.
UBound Function
Returns the upper boundary of an array.
Let Statement
Assigns a value to a variable.
Array Function
Returns the type Variant with a data field.
DimArray Function
Returns a Variant array.
Erase Statement
Erases the contents of array elements of fixed size arrays and releases the memory used by arrays of variable size.
Option Base Statement
Defines the default lower boundary for arrays as 0 or 1.
Option Explicit Statement
Specifies that every variable in the program code must be explicitly declared with the Dim statement.
Public Statement
Dimensions a variable or an array at the module level (that is, not within a subroutine or function), so that the variable and the array are valid in all libraries and modules.
Global keyword
Dimensions a variable or an array at the global level (that is, not within a subroutine or function), so that the variable and the array are valid in all libraries and modules for the current session.
Static Statement
Declares a variable or an array at the procedure level within a subroutine or a function, so that the values of the variable or the array are retained after exiting the subroutine or function. Dim statement conventions are also valid.
TypeName Function; VarType Function
Returns a string (TypeName) or a numeric value (VarType) that contains information for a variable.
Set Statement
Sets an object reference on a variable.
FindObject Function
Enables an object to be addressed at run-time as a string parameter through the object name.
FindPropertyObject Function
Enables objects to be addressed at run-time as a string parameter using the object name.
Optional (in Function Statement)
Allows you to define parameters that are passed to a function as optional.
IsMissing Function
Tests if a function is called with an optional parameter.
HasUnoInterfaces Function
Tests if a Basic Uno object supports certain Uno interfaces.
EqualUnoObjects Function
Returns True if the two specified Basic variables represent the same Uno object instance.
IsUnoStruct Function
Returns True if the given object is a Uno struct.