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isDirectory
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The isDirectory Function returns true if the argument {arg} is a Directory;
otherwise, false is returned.
When to use The isDirectory function is used to query an object to see if it is of type
Directory. An alternate method would be to use the isType function using the Type
argument as type Directory.
(isDirectory arg) Returns true if arg is a Directory.
Returns false if arg is not a Directory.
Here are a number of links to Lambda coding examples which contain this instruction in various use cases.
Example_Directory_isDirectory_001
Here are the links to the data types of the function arguments. Here are also a number of links to functions having arguments with any of these data types.
You can always talk with the AIS at aiserver.sourceforge.net.
Name
Description
AIS Types arg An Analytic Information Server object Character, String, Symbol, Vector, BitVector, ByteVector, IntVector,
FltVector, ObjVector, Structure, Dictionary, Directory,
Matrix, NumMatrix, Integer, Float, Number, Complex
Returns:
Examples
Argument Types
Character
String
Symbol
Vector
BitVector
ByteVector
IntVector
FltVector
ObjVector
Structure
Dictionary
Directory
Matrix
NumMatrix
Integer
Float
Number
Complex
Boolean
How do I contact the AIS team?