On Thu, 1 Jun 2000, Jeffrey R. Lewis wrote:
No so, of course. (- x) means `negate x'. Bummer. What an unpleasant bit of
asymmetry!
How about ((-) x) ?
Jan
Jan Skibinski wrote:
On Thu, 1 Jun 2000, Jeffrey R. Lewis wrote:
No so, of course. (- x) means `negate x'. Bummer. What an unpleasant bit of
asymmetry!
How about ((-) x) ?
That, regrettably, is the wrong function. That function is \y - x - y. I wanted
\y - y - x.
--Jeff
"Jeffrey R. Lewis" wrote:
Jan Skibinski wrote:
On Thu, 1 Jun 2000, Jeffrey R. Lewis wrote:
No so, of course. (- x) means `negate x'. Bummer. What an unpleasant bit of
asymmetry!
How about ((-) x) ?
That, regrettably, is the wrong function. That function is \y - x -
Hi Jeff,
| You can write the section (+ x) to specify a function to add `x' to
| something. That's great, then you need to specify a function for
| subtracting `x' from something.
This is why the "subtract" function is included in the Prelude:
Prelude map (subtract 1) [1..10]
On 01-Jun-2000, Jeffrey R. Lewis [EMAIL PROTECTED] wrote:
You can write the section (+ x) to specify a function to add `x' to
something. That's great, then you need to specify a function for subtracting
`x' from something. Great, you just type in: (- x), and you're done, right?
No so,
Date sent: Thu, 01 Jun 2000 08:47:23 -0700
From: "Jeffrey R. Lewis" [EMAIL PROTECTED]
Organization: Galois Connections
To: Jan Skibinski [EMAIL PROTECTED]
Copies to: [EMAIL PROTECTED]
Subject:
Zhanyong Wan wrote:
"Jeffrey R. Lewis" wrote:
Jan Skibinski wrote:
On Thu, 1 Jun 2000, Jeffrey R. Lewis wrote:
No so, of course. (- x) means `negate x'. Bummer. What an unpleasant bit of
asymmetry!
How about ((-) x) ?
That, regrettably, is the wrong
