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Syntax

c = isvarname(a)

Description

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 namelengthmax. isvarname does not determine whether a variable of the name you specify exists.

Examples

Inputs

Name	Description
a	Specifies a string.

Outputs

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

Examples

C = isvarname('__name')
C = isvarname('n_a_m_e_')

Related Topics

iskeyword
namelengthmax