[Gretl-devel] Re: foreach-loop for arrays
On Tue, 3 Dec 2019, Artur Tarassow wrote:
<hansl>
strings S = defarray("A", "B", "C")
loop foreach i S -q
eval S[i]
endloop
matrix M = seq(1,3)
loop foreach i M -q
eval M[i]
endloop
</hansl>
In your examples the counter is a simple index and there would be no
substantial differences from "loop i = 1 .. nelem(S)"; IMO a proper
extension of the foreach loop to arrays would look more or less like
<hansl>
strings S = defarray("A", "B", "C")
loop foreach i S -q
eval strlen($i)
endloop
</hansl>
Apart from being rather cool, can you elaborate on the potential
advantages?
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Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
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