isError
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The isError function determines if the argument is has type Error. The
isError function returns a Boolean value of true otherwise it returns false.
Usage Use the isError function when you wish to determine if an object is of type Error.
(isError arg ) Returns true if {arg} is type Error.
Expression:
Arguments
Name
Type
Description Argument: arg Character String Symbol Vector BitVector ByteVector IntVector Void
FltVector ObjVector Structure Dictionary Directory Brick Pair List
Matrix NumMatrix Integer Float Number Complex Boolean
An argument to be checked to see if it is an Error type.
Returns:
Here are a number of links to Lambda coding examples which contain this instruction in various use cases.
Here are the links to the data types of the function arguments.
Character | String | Symbol | Vector |
BitVector | ByteVector | IntVector | Void |
FltVector | ObjVector | Structure | Dictionary |
Directory | Brick | Pair | List |
Matrix | NumMatrix | Integer | Float |
Number | Complex | Boolean |
Here are also a number of links to functions having arguments with any of these data types.
Analytic Information Server (AIS)AIS Component Systems
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