isfield

Checks if the given fieldname exists in the structure

Calling Sequence

bool = isfield(s,fieldname)

Arguments

:s A struct array : :fieldname A matrix of strings : :bool A matrix of boolean. :

Description

This function returns true if the specified structure “s” includes the field “field”, regardless of the corresponding value.

Examples

s = `struct`_("field_1",123,"field_2",456,"field_4",789)

// Single Fieldname Syntax
isfield( s , "field_1"  )

// Multiple Fieldname Syntax
isfield( s , [ "field_1" "field_2" ; "field_3" "field_4" ] )

See Also

• struct create a struct
• getfield list field extraction
• definedfields return index of list’s defined fields