Re: Function argument types
- To: mathgroup at smc.vnet.net
- Subject: [mg112958] Re: Function argument types
- From: "Carl K. Woll" <carlw at wolfram.com>
- Date: Thu, 7 Oct 2010 03:38:53 -0400 (EDT)
On 10/6/2010 2:16 AM, Sam Takoy wrote: > Hi, > > I can't see to find the answer to this basic question: > > What's the difference between > > f[n_?Integer]:= > > and > > f[n_Integer]:= > > I would be happy to read more about this, but what's the keyword? > > Thanks, > > Pavel > > Do FullForm[n_?Integer] and FullForm[n_Integer] and read up about the different symbols. In this case, the relevant things to look up is PatternTest and Integer. Carl Woll Wolfram Research