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Re: Which, Switch, If, and Piecewise

• To: mathgroup at smc.vnet.net
• Subject: [mg116725] Re: Which, Switch, If, and Piecewise
• From: DrMajorBob <btreat1 at austin.rr.com>
• Date: Fri, 25 Feb 2011 06:35:15 -0500 (EST)

Use the one that's more readable.

If you're testing for several values of the same expression, that would be  
Switch; it evaluates the expression only once.

If you're testing for several mutually exclusive conditions, use Which.

If you're testing one condition, use If.

Bobby

On Thu, 24 Feb 2011 05:20:42 -0600, Harvey P. Dale <hpd1 at nyu.edu> wrote:

> What are the pros and cons among Which, Switch, If, and
> Piecewise?  When should one use one rather than the others?  Is one
> usually faster?  Is one easier to compile?
> Thanks,
> Harvey
>
>
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-- 
DrMajorBob at yahoo.com