Company Events Academic Community Support Solutions Products & Services Contact NI MyNI

is_validvarname (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

»View Product Info
Download Help (Windows Only)

Owning Class: membership

Requires: MathScript RT Module


c = is_validvarname(a)

Legacy Name: isvarname


Determines whether a string is a valid variable name. A valid variable name begins with a letter followed by a number of letters, digits, or underscores. The length of a valid variable name must be less than or equal to maxnamelen. is_validvarname does not determine whether a variable of the name you specify exists.



Name Description
a Specifies a string.


Name Description
c Returns 1 if a is a valid variable name. Otherwise, this function returns 0. c is a Boolean.


The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized


C = is_validvarname('__name')
C = is_validvarname('n_a_m_e_')

Related Topics



Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
Add Comments 1 2 3 4 5 submit