search for: 0def

...be improved by discussing the meaning of "\0" escape sequence. In R (currently used: R-2.6.2), a "\0" in a string will silently terminate that string, just as it would in C code. There is no warning about an unknown escape sequence. (cf. R FAQ 7.37) # example: s <- "abc\0def" s # --> [1] "abc" nchar(s) # --> [1] 3 The "\0" seems to be so fundamental, that it cannot be handled by any R function, am I right? E.g., the function escapeBS (package:Hmisc) does not correctly handle "\0" sequences, that is in contrast to what is state...

...ing of "\0" escape sequence. > In R (currently used: R-2.6.2), a "\0" in a string will > silently terminate that string, just as it would in C code. > There is no warning about an unknown escape sequence. > (cf. R FAQ 7.37) > > # example: > s <- "abc\0def" > s > # --> [1] "abc" > nchar(s) > # --> [1] 3 > > The "\0" seems to be so fundamental, that it cannot be handled by > any R function, am I right? > E.g., the function escapeBS (package:Hmisc) does not correctly > handle "\0" sequ...

...ever, is there already such a map (function) accessable? Also, is it ok assume that a character string can contain any 7/8-bit ASCII character (1-127/1-255)? The special value "\0" terminates the character string. (Is "\0" in a character string safe? Example substring("abc\0def", 5) gives "", but what happens inside [R]?) Reason for this is that I would like store subparts of the buffer that I have read using readBin() as a character string, but I would also be able to save it back using writeBin() without loosing anything. Thanks for a great language! H...

On Fri, Jul 15, 2016 at 12:41:49PM -0400, Ilia Mirkin wrote: > On Fri, Jul 15, 2016 at 12:36 PM, Peter Wu <peter at lekensteyn.nl> wrote: > > On Fri, Jul 15, 2016 at 12:10:23PM -0400, Ilia Mirkin wrote: > >> On Fri, Jul 15, 2016 at 9:12 AM, Peter Wu <peter at lekensteyn.nl> wrote: > >> > Hi, > >> > > >> > Here are two patches to fix