Numeric functions

islink

<number> = Numeric functions: islinkislink <path>
<number> = Numeric functions: islinkislink ( <path> )

Test whether Flow control: if … then
Flow control: try … thenthe path refers to a Text functions: link
Instructions: linklink.

Flow control: returnReturns a numeric Glossary: Valuevalue which is either 1 (true) Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or 0 (false).

Flow control: if … then
Flow control: try … thenThe path must be a Glossary: text, text_valtext value Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and may be a full Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or partial path Operators: Boolean Or with Variable "||="
Operators: Bitwise Or with Variable "|="
Operators: Bitwise Or "|"
Operators: Boolean Or "||"or start with "~" for Flow control: if … then
Flow control: try … thenthe user's home directory. Symbolic Text functions: link
Instructions: linklinks are followed except for Flow control: if … then
Flow control: try … thenthe last path component. Flow control: if … then
Flow control: try … thenThe path must Numeric functions: existsexist except for Flow control: if … then
Flow control: try … thenthe last path component, which may be broken. Flow control: if … then
Flow control: try … thenElse List functions: thisthis Vipsi command syntax: Functions
Functions
Glossary: Functionfunction aborts with an error, which may be caught with Flow control: try … thentry.

Flow control: if … then
Flow control: try … thenThe following is a Data Types: Lists and arrays
Item selector "[]": Lists
Glossary: list, list_vallist of what Numeric functions: islinkislink Flow control: returnreturns under special Flow controlconditions.

• Path refers to Text functions: file
  Instructions: filefile -> 0
• Path refers to directory -> 0
• Path refers to nothing -> 0

• Symbolic Text functions: link
  Instructions: linklink to Text functions: file
  Instructions: filefile -> 1
• Symbolic Text functions: link
  Instructions: linklink to directory -> 1
• Symbolic Text functions: link
  Instructions: linklink to Text functions: link
  Instructions: linklink -> 1
• Path refers to broken Text functions: link
  Instructions: linklink -> 1

As with all Vipsi command syntax: Functions
Functions
Glossary: Functionfunctions which accept exactly one Vipsi command syntax: Arguments
Glossary: Argumentsargument Flow control: if … then
Flow control: try … thenthe Separators: Round brackets "( … )"
Functions with varying return types: bracket expression "()"parenthesis are optional Operators: Boolean And with Variable "&&="
Operators: Bitwise And with Variable "&="
Operators: Bitwise And "&"
Operators: Boolean And "&&"and may be omitted Flow control: if … then
Flow control: if … thenif the Vipsi command syntax: Arguments
Glossary: Argumentsargument is no Vipsi command syntax: Expressions
Glossary: Expressionexpression with Vipsi command syntax: Operators
Operators
Glossary: Operatoroperators.

e.g.:

vipsi> Instructions: putput Numeric functions: islinkislink("~/.vipsi")  0
vipsi>