more minor fixes

extra/24-game/24-game.factor

@@ -8,6 +8,7 @@ backtrack math.ranges locals fry memoize macros assocs ;
 
 IN: 24-game
 
+: nop ;
 : do-something ( a b -- c ) { + - * } amb-execute ;
 : maybe-swap ( a b -- a b ) { nop swap } amb-execute ;
 : some-rots ( a b c -- a b c )

extra/math/derivatives/derivatives.factor

@@ -1,8 +1,9 @@
 ! Copyright © 2008 Reginald Keith Ford II
 ! Tool for computing the derivative of a function at a point 
 USING: kernel math math.points math.function-tools ;
-IN: derivatives
+IN: math.derivatives
 
 : small-amount ( -- n ) 1.0e-12 ;
 : near ( x -- y ) small-amount + ;
 : derivative ( x function -- m ) 2dup [ near ] dip [ eval ] 2bi@ slope ;
+: derivative-func ( function -- function ) [ derivative ] curry ;

extra/math/function-tools/function-tools.factor

@@ -1,5 +1,5 @@
 ! Copyright © 2008 Reginald Keith Ford II
-! Tools for quickly comparing and evaluating mathematical Factor functions
+! Tools for quickly comparing, transforming, and evaluating mathematical Factor functions
 
 USING: kernel math arrays ;
 IN: math.function-tools 

extra/math/newtons-method/newtons-method.factor

@@ -1,7 +1,7 @@
 ! Copyright © 2008 Reginald Keith Ford II
 ! Newton's Method of approximating roots
 
-USING: kernel math math.derivatives derivatives ;
+USING: kernel math math.derivatives ;
 IN: newtons-method
 
 <PRIVATE