[Jprogramming] Default in control structure?

[Sprague, Webb (OFM)]

Hi all,

Does J have a conditional control structure such that 1 of N options, with a way to specify a default if none of the conditions are met? 

In matlab, for example:

if (x==4) 
	disp("4")
elseif (x==5)
	disp("5")
else
	disp('other')
endif

One could also use a switch/ case/ otherwise construct.

This construct is especially important in defensive programming, and is way better than just have a chain of if statements, since it guarantees that only one of the conditional blocks is executed.

Thanks!
---
W. Webb Sprague
Forecast Analyst
Office of Financial Management, Forecast Division
GA Bldg., 3rd Floor, 318-K
PO Box 43113
Olympia, WA 98504-3113
Tel:  360-902-0634
Fax:  360-725-5174
webb.sprague at ofm.wa.gov
http://www.ofm.wa.gov/pop/