Brightsign HD2000 BrightScript Reference Guide Manuale Utente Scaricare il pdf (Pagina 5)

Line Numbers and Statement Separator

BrightScript lines may have optional line numbers. For example, the following two examples of code are the

same:

10 hello=-1

20 if hello=-1 then print “hello there!!”

30 goto 20 ‘ loop and print forever!

hello=-1

loop_here:

if hello=-1 then print “hello there!!”

goto loop_here ‘ loop and print forever!

In BrightScript, if you wish to put multiple statements on a single line, separate them with a : (colon).

For example:

Hello=”hello there!”:print hello

Expressions, Variables, and Constants

Expression Summary

An expression is a combination of variables, constants, and functions that can evaluate to a value. The value

will also have a type.

For example:

Roku> script

BrightScript Micro Debugger.

Enter any BrightScript statement, debug commands, or HELP.

BrightScript> ?5+1

BrightScript> ? 2.1 - 2

0.0999999

BrightScript> days=5

BrightScript> ?days+2

BrightScript> ?"hello"+" "+"there"

hello there

Variable Names

Variable names

• must start with an alphabetic character (a – z)

• may consist of alphabetic characters, numbers, or the symbol “_” (underscore)

• may end with an optional type designator.

• are not case sensitive

• may be of any reasonable length

• may not use a “reserved word” as the name (see appendix for list of reserved words).

For example:

boy5

1 2 3 4 5 6 7 8 9 10 ... 29 30

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Brightsign HD2000 BrightScript Reference Guide Manuale Utente Pagina 5