proc

Instructions: procproc <name> ( <arguments> ) { <statements> }

Create a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure.

Flow control: if … then
Flow control: try … thenThe Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Instructions: procproc creates a Glossary: Variable, var_refvariable Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and Operators: Assignment "="assigns it a Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure as it's Glossary: Valuevalue. Flow control: if … then
Flow control: try … thenThe Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure itself is written in a form very similar to that of a Literals: Procedure literals
Procedures: Procedure literalsprocedure literal.

<arguments> denotes a Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist of Vipsi command syntax: Arguments
Glossary: Argumentsargument Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiernames. It may be empty, consist of one Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiername, Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or a Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist of Vipsi command syntax: Identifiers (names)
Identifiers, names
Operators: Make Identifier "@"
Text functions: name
Glossary: Name, Identifiernames separated by Separators: Comma ","commas. Flow control: if … then
Flow control: try … thenThe last item in Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Arguments
Glossary: Argumentsarguments Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist may be Flow control: if … then
Flow control: try … thenthe special character *, which indicates that an unknown amount of further Vipsi command syntax: Arguments
Glossary: Argumentsarguments may be passed to Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure. These are stored in unnamed List functions: localslocal Glossary: Variable, var_refvariables, which can be accessed using List functions: localslocals[<index>].

<statements> are Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Statements
Glossary: Statementstatements which are executed when Flow control: if … then
Flow control: try … thenthe Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure is called.

Actually Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Instructions: procproc is a short form for creating a Glossary: Variable, var_refvariable with Vipsi command syntax: Instructions
Instructions
Glossary: Instructioninstruction Instructions: var
How does VScript::Value() work?: Var*&var Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and assigning it a Literals: Procedure literals
Procedures: Procedure literalsprocedure literal as initial Glossary: Valuevalue. Operators: Bitwise Not "~"
Operators: Boolean Negation "!"Note Flow control: if … then
Flow control: try … thenthe difference:

Vipsi command syntax: Instructions
Instructions
Glossary: InstructionInstruction Instructions: procproc:

Instructions: procproc <name> ( <arguments> ) { <statements> }

Vipsi command syntax: Instructions
Instructions
Glossary: InstructionInstruction Instructions: var
How does VScript::Value() work?: Var*&var with Literals: Procedure literals
Procedures: Procedure literalsprocedure literal as initial Glossary: Valuevalue:

Instructions: var
How does VScript::Value() work?: Var*&var <name> = Instructions: procproc ( <arguments> ) { <statements> }

e.g.:

Instructions: procproc foo(bär) { Flow control: returnreturn bär }
Instructions: var
How does VScript::Value() work?: Var*&var foo = Instructions: procproc(bär) { Flow control: returnreturn bär }

See --> Literals: Procedure literals
Procedures: Procedure literalsProcedure literals for more details on Literals: Procedure literals
Procedures: Procedure literalsprocedure literals. (sic!)

Examples

Instructions: procproc foo()  { }
Instructions: procproc bee(a) { Instructions: putput a }
Instructions: procproc x(a,b) { Flow control: returnreturn a+b }
Instructions: procproc foo.bar() { }

Instructions: procproc fak(n) { Flow control: if … thenif n<=1 Flow control: returnreturn 1; Flow control: if … then
Flow control: try … thenelse Flow control: returnreturn n*fak(n-1); Flow control: if … then
Flow control: try … thenthen }
Instructions: putput fak(77)

Instructions: procproc foo(a) { Instructions: putput a }   // define Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedureprocedure foo
foo(123)                // Functions with varying return types: call
Instructions: callcall foo; prints Flow control: if … then
Flow control: try … thenthe Glossary: number, num_valnumber: 123
foo("abc")              // Functions with varying return types: call
Instructions: callcall foo; prints Flow control: if … then
Flow control: try … thenthe Data Types: Text
Item selector "[]": Text
Glossary: text, text_valtext: abc
Instructions: putput foo                 // Instructions: putput prints foo: disassembly

Instructions: procproc Operators: Add to Variable "+="
Operators: Add "+"add ( * )
{
    Instructions: var
How does VScript::Value() work?: Var*&var i = Numeric functions: countcount(List functions: localslocals)
    // Operators: Bitwise Not "~"
Operators: Boolean Negation "!"note: Numeric functions: countcount(List functions: localslocals) Functions with varying return types: include
Instructions: includeincludes +1 for Instructions: var
How does VScript::Value() work?: Var*&var i itself!
    Instructions: var
How does VScript::Value() work?: Var*&var result = 0
    Flow control: do … loopdo
        Flow control: whilewhile --i
        result += List functions: localslocals[i]
    Flow control: do … looploop
    Flow control: returnreturn result
}