exists finds objects lots of places! (PR#142)

Full_Name: Steve Oncley
Version: 0.63.3
OS: Redhat5.2 i386 
Submission from: 128.117.80.159 (128.117.80.159)


"exists" finds object UP TO the position it is in

search()

[1] ".GlobalEnv"   "Autoloads"    "package:base"

exists("ls",1)

[1] TRUE

exists("ls",2)

[1] TRUE

exists("ls",3)

[1] TRUE

x <- 1
exists("x",1)

[1] TRUE

exists("x",2)

[1] FALSE

exists("x",3)

[1] FALSE

whereas, S+ only finds the one position where the object is:

search()

[1] ".Data"                                    
 [2] "/net/aster/splus3.4/local/.Data"          
 [3] "/net/aster/splus3.4/splus/.Functions"     
 [4] "/net/aster/splus3.4/stat/.Functions"      
 [5] "/net/aster/splus3.4/s/.Functions"         
 [6] "/net/aster/splus3.4/s/.Datasets"          
 [7] "/net/aster/splus3.4/stat/.Datasets"       
 [8] "/net/aster/splus3.4/splus/.Datasets"      
 [9] "/net/aster/splus3.4/library/Matrix/.Data" 
[10] "/net/aster/splus3.4/library/trellis/.Data"

exists("ls",1)

[1] F

exists("ls",2)

[1] F

exists("ls",3)

[1] F

exists("ls",4) 

[1] F

exists("ls",5)

[1] T

exists("ls",6)

[1] F


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