g/all-skin-params.html. PlantUML Sprachreferenz (1.2021.2) 357 / 405 25 PREPROCESSING 25 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those -> Bob : $ef @enduml PlantUML Sprachreferenz (1.2021.2) 358 / 405 25.3 Boolean expression 25 PREPROCESSING 25.3 Boolean expression 25.3.1 Boolean represention [0 is false] There is not real boolean @enduml PlantUML Sprachreferenz (1.2021.2) 359 / 405 25.5 While loop [!while, !endwhile] 25 PREPROCESSING 25.5 While loop [!while, !endwhile] You can use !while and !endwhile keywords to have repeat

g/all-skin-params.html. PlantUML Sprachreferenz (1.2021.1) 336 / 383 24 PREPROCESSING 24 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those -> Bob : $ef @enduml PlantUML Sprachreferenz (1.2021.1) 337 / 383 24.3 Boolean expression 24 PREPROCESSING 24.3 Boolean expression 24.3.1 Boolean represention [0 is false] There is not real boolean @enduml PlantUML Sprachreferenz (1.2021.1) 338 / 383 24.5 While loop [!while, !endwhile] 24 PREPROCESSING 24.5 While loop [!while, !endwhile] You can use !while and !endwhile keywords to have repeat

g/all-skin-params.html. PlantUML Sprachreferenz (1.2021.2) 341 / 388 25 PREPROCESSING 25 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those -> Bob : $ef @enduml PlantUML Sprachreferenz (1.2021.2) 342 / 388 25.3 Boolean expression 25 PREPROCESSING 25.3 Boolean expression 25.3.1 Boolean represention [0 is false] There is not real boolean @enduml PlantUML Sprachreferenz (1.2021.2) 343 / 388 25.5 While loop [!while, !endwhile] 25 PREPROCESSING 25.5 While loop [!while, !endwhile] You can use !while and !endwhile keywords to have repeat

/all-skin-params.html. PlantUML Sprachreferenz (1.2023.11) 473 / 528 25 PREPROCESSING 25 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those be surrounded by curly brackets. (for JSON variable definition and usage, see more details on Preprocessing-JSON page) Variables created outside function are global, that is you can access them from everywhere **$name** should be David PlantUML Sprachreferenz (1.2023.11) 474 / 528 25.2 Boolean expression 25 PREPROCESSING @enduml 25.2 Boolean expression 25.2.1 Boolean representation [0 is false] There is not real

ll-skin-params.html. PlantUML Sprachreferenz (1.2019.6) 145 / 172 19 PREPROCESSING 19 Preprocessing Some minor preprocessing capabilities are included in PlantUML, and available for all diagrams. expression in condition. PlantUML Sprachreferenz (1.2019.6) 146 / 172 19.4 Void function 19 PREPROCESSING • else is also implemented @startuml !$a = 10 !$ijk = "foo" Alice -> Bob : A !if ($ijk == "foo") msg("foo1", "foo2") @enduml PlantUML Sprachreferenz (1.2019.6) 147 / 172 19.5 Return function 19 PREPROCESSING Variables defined in functions are local. It means that the variable is destroyed when the function

ll-skin-params.html. PlantUML Sprachreferenz (1.2019.9) 145 / 172 19 PREPROCESSING 19 Preprocessing Some minor preprocessing capabilities are included in PlantUML, and available for all diagrams. Alice -> Bob : $ef @enduml PlantUML Sprachreferenz (1.2019.9) 146 / 172 19.3 Conditions 19 PREPROCESSING 19.3 Conditions • You can use expression in condition. • else is also implemented @startuml msg("foo1", "foo2") @enduml PlantUML Sprachreferenz (1.2019.9) 147 / 172 19.5 Return function 19 PREPROCESSING Variables defined in functions are local. It means that the variable is destroyed when the function

all- skin-params.html. PlantUML Sprachreferenz (1.2020.23) 267 / 303 20 PREPROCESSING 20 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those Bob : $ef @enduml PlantUML Sprachreferenz (1.2020.23) 268 / 303 20.3 Boolean expression 20 PREPROCESSING 20.3 Boolean expression 20.3.1 Boolean represention [0 is false] There is not real boolean @enduml PlantUML Sprachreferenz (1.2020.23) 269 / 303 20.5 While loop [!while, !endwhile] 20 PREPROCESSING 20.5 While loop [!while, !endwhile] You can use !while and !endwhile keywords to have repeat

all- skin-params.html. PlantUML Sprachreferenz (1.2020.22) 255 / 291 20 PREPROCESSING 20 Preprocessing Some preprocessing capabilities are included in PlantUML, and available for all diagrams. Those Bob : $ef @enduml PlantUML Sprachreferenz (1.2020.22) 256 / 291 20.3 Boolean expression 20 PREPROCESSING 20.3 Boolean expression 20.3.1 Boolean represention [0 is false] There is not real boolean @enduml PlantUML Sprachreferenz (1.2020.22) 257 / 291 20.5 While loop [!while, !endwhile] 20 PREPROCESSING 20.5 While loop [!while, !endwhile] You can use !while and !endwhile keywords to have repeat

databaseBackgroundColor Aqua @enduml PlantUML Sprachreferenz (1.2019.1) 124 / 146 17 PREPROCESSING 17 Preprocessing Some minor preprocessing capabilities are included in PlantUML, and available for all diagrams. cannot start with a digit. PlantUML Sprachreferenz (1.2019.1) 125 / 146 17.4 Macro definition 17 PREPROCESSING @startuml !define SEQUENCE (S,#AAAAAA) Database Sequence !define TABLE (T,#FFAAAA) Database Alice, ok) @enduml PlantUML Sprachreferenz (1.2019.1) 126 / 146 17.5 Adding date and time 17 PREPROCESSING 17.5 Adding date and time You can also expand current date and time using the special variable

18 SKINPARAM COMMAND PlantUML Sprachreferenz (1.2019.4) 143 / 166 19 PREPROCESSING 19 Preprocessing Some minor preprocessing capabilities are included in PlantUML, and available for all diagrams. cannot start with a digit. PlantUML Sprachreferenz (1.2019.4) 144 / 166 19.4 Macro definition 19 PREPROCESSING @startuml !define SEQUENCE (S,#AAAAAA) Database Sequence !define TABLE (T,#FFAAAA) Database Alice, ok) @enduml PlantUML Sprachreferenz (1.2019.4) 145 / 166 19.5 Adding date and time 19 PREPROCESSING 19.5 Adding date and time You can also expand current date and time using the special variable