Re: MatchQ[x^1, x^_Integer]
- To: mathgroup at smc.vnet.net
- Subject: [mg38981] Re: MatchQ[x^1, x^_Integer]
- From: "Steve Luttrell" <luttrell at _removemefirst_westmal.demon.co.uk>
- Date: Thu, 23 Jan 2003 08:05:11 -0500 (EST)
- References: <b0lv4m$59l$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
MatchQ[x^1, x^_Integer] gives False but MatchQ[Unevaluated[x^1], x^_Integer] gives True The first result is because x^1 evaluates to x which doesn't match the pattern x^_Integer. The second result is because Unevaluated prevents this evaluation from occurring before the pattern matching. -- Steve Luttrell West Malvern, UK "Kimberly Damon yamin" <dykim92 at yahoo.com> wrote in message news:b0lv4m$59l$1 at smc.vnet.net... > MatchQ[x^1, x^_Integer] > I got "False" result. I think I should get "True" for this. > Could anyone explain this ? > > Thanks >