Name

definedfields — return index of list's defined fields

Calling Sequence

k=definedfields(l)

Parameters

l

a list , tlist or mlist variable.

k

a vector of index.

Description

If l is a list tlist mlist k=definedfields(l) returns in k the indices of the defined list fields. This function is useful because indexing undefined fields produces an error.

Examples

 
l=list(1);l(3)=5
k=definedfields(l)

t=tlist('x');t(5)=4
definedfields(t)

m=mlist(['m','a','b']);m.b='sdfgfgd'
definedfields(m)

See Also

list , tlist , mlist , insertion , extraction