Re: Test function argument with VectorQ and NumericQ
- To: mathgroup at smc.vnet.net
- Subject: [mg107323] Re: [mg107305] Test function argument with VectorQ and NumericQ
- From: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
- Date: Tue, 9 Feb 2010 02:45:19 -0500 (EST)
- References: <201002081254.HAA07544@smc.vnet.net>
Hi, what about f[vec : {__?NumericQ}] := vec; or g[vec_?(VectorQ[#, NumericQ] &)] := vec ? Cheers Patrick On Mon, 2010-02-08 at 07:54 -0500, Oliver Fochler wrote: > Hi there, > > in order to get my NIntegrate running properly it seems that I need to > ensure that my functions actually take numeric arguments (without > NIntegrate trying to do some symbolic stuff before). > > For a simple case something like > > f[x_?NumericQ] := (stuff) > > seems to work fine. However, I do use vectors (lists) as function > arguments, i.e. f[x_, y_]:= (stuff) needs to be called as f[ {1,2,3}, > 4]. > How do I test this for numerical values? I know that I can use > VectorQ[ x, NumericQ ] to check whether x is a vector that contains > only numeric values. > > But how do I combine this into a pattern test, that can be used in an > argument list? > I would appreciate any help! > > Cheers, > Oliver >
- References:
- Test function argument with VectorQ and NumericQ
- From: Oliver Fochler <janitor048@googlemail.com>
- Test function argument with VectorQ and NumericQ