There are 11 types: DefBool - for boolean variables ĭefInt - for integer variables of type Integer ĭefLng - for integer variables of type Long Integer ĭefSng - for variables with a single-precision floating point ĭefDbl - for variables with double-precision floating-point type Double ĭefCur - for variables with a fixed point of type Currency ĭefErr - for object variables containing error information. A statement with a letter will work in the module, and it must be specified before subprograms and functions appear. For this, the statement DefXXX is used XXX is the letter type designation. In addition, the variant type does not choose the optimal variable type for data, which increases the workload of computer resources.īasic can automatically assign a variable type by its prefix (the first letter in the name) to simplify the work if you prefer to use the Hungarian notation. Third, the variant type is very resource-intensive, and considerable time is needed for the hidden conversion.
Second, it allows you to control variables that can greatly facilitate the search for errors. First, it increases the readability of the text. For longer macros or those that will work in large documents, it is strongly recommended that you declare variables. If you write a macro from a pair of lines to work with small documents, you don't need to declare variables, as the variable will automatically be declared as the variant type. Strictly speaking, it is not necessary to declare variables in LibreOffice Basic (except for arrays). Whether it makes sense to do so is up to you. Note: In examples that contain square brackets, if you remove the brackets, macros will show a window with an error. As you can see, you can use localized variable names. Here are some examples of correct variable names: MyNumber=5
Other punctuation or characters from non-Latin alphabets can cause a syntax error or a BASIC runtime error if names are not put within square brackets. They should start with either upper- or lower-case letters of the Latin alphabet, and they can include underscores ("_") and numerals. Variable names cannot contain more than 255 characters.
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