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Contents
Preface

Virtuoso Functions Guide

Administration
Aggregate Functions
Array Manipulation
aref
aset
concat
concatenate
dvector
get_keyword
get_keyword_ucase
gvector_digit_sort
gvector_sort
isarray
make_array
position
rowvector_digit_sort
serialize
split_and_decode
tree_md5
vector
vector_concat
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Phrases
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web & Internet
XML
XPATH & XQUERY

Functions Index

isarray

Check for a valid array
boolean isarray (in x any);
Description

isarray is true if the argument is a valid argument to aref. This is the case for any string or vector.

Parameters
x – The variable to be checked.
Return Values

1 - if arg is an array (vector()) or string (varchar, char) otherwise return 0.

Errors

No error, it always succeeds.