R bug? (if-else problem in main program)
"Lorenz Gygax" <gygax at ifi.unizh.ch> writes:
If you want to split this over several lines, you need curly braces:
a <- 1
if ( a == 1 ) {
print ('yes')
} else {
print ('no')
}
Yep. And it isn't a bug, but a design issue. In interactive mode we print the result of an expression as soon as it is syntactically complete, so upon seeing
a <- 1 ; if ( a == 1 ) print("yes")
[1] "yes" we assume that we are done with that statement. After all, the next line might be completely unrelated, e.g. "b <- 2", so we cannot wait and see whether it starts with "else". So you need to ensure somehow that the line is not syntactically complete, using braces as above, or, e.g.,
a <- 1 ; if ( a == 1 ) print("yes") else
+ print("no")
[1] "yes"
O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._