vipsi - the friendly vip script interpreter

Operators

Boolean Or with Variable "||="

<num_var> ||= <number>

Operators: Boolean Or with Variable "||="
Operators: Boolean Or "||"
Boolean 'or
' of <variable> Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"
and
<value>.

Calculate result of Operators: Boolean Or with Variable "||="
Operators: Boolean Or "||"
boolean 'or
' Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"
and
store result in Glossary: Variable, var_refvariable.

Operators: Assignment "="
Built-in operators: Assignments:
Assignment
Vipsi command syntax: Operators
Operators
Glossary: Operator
operators
are right-oriented, that means: Flow control: if … thenif multiple Operators: Assignment "="
Built-in operators: Assignments:
assignments
are made in one Vipsi command syntax: Expressions
Glossary: Expression
expression
, they are evaluated right-to-left.

Both Glossary: Operator
Glossary: Operand
operands
must be numeric. Flow control: if … thenIf any of both Vipsi command syntax: Arguments
Glossary: Arguments
arguments
is a Data Types: Text
Glossary: text, text_val
text
, Flow control: if … then
Flow control: try … then
then
it is evaluated as Glossary: number, num_valnumber. Flow control: if … then
Flow control: if … then
If the
conversion fails Flow control: if … then
Flow control: try … then
then
an error is generated.

Pruning Operators: Bitwise Not "~"
Operators: Boolean Negation "!"
not
yet implemented. Data Types: Lists and arrays
Glossary: list, list_val
List
expansion Operators: Bitwise Not "~"
Operators: Boolean Negation "!"
not
yet implemented. (Version 0.8.7)

e.g.:

Instructions: var
How does VScript::Value() work?: Var*&
var
a = 0 a ||= 0 a ||= 1

Operators: Bitwise Not "~"
Operators: Boolean Negation "!"
Note
:
all Operators: Assignment "="
Built-in operators: Assignments:
assignment
Vipsi command syntax: Operators
Operators
Glossary: Operator
operators
may be changed, so that Flow control: if … then
Flow control: try … then
the
Flow control: do … loopdo no longer Flow control: returnreturn a result Glossary: Valuevalue. There are syntactical ambiguities with Flow control: if … then
Flow control: try … then
the
"=" Numeric functions: signsign e.g. in Literals: List literals
Lists and arrays: List literals
list literals
. Changing Flow control: if … then
Flow control: try … then
the
result to 'no Glossary: Valuevalue' will also allow named items in other places, e.g. passing named Vipsi command syntax: Arguments
Glossary: Arguments
arguments
to Vipsi command syntax: Procedures
Data Types: Procedures
Glossary: Procedure
procedures
for a obj-C-like syntax. Also, Operators: Bitwise Not "~"
Operators: Boolean Negation "!"
not
printing results of Operators: Assignment "="
Built-in operators: Assignments:
assignments
in Flow control: if … then
Flow control: try … then
the
shell would become more clear.

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