search for: backreferenc

Hi Folks, I'm trying to extract just the backreferences from a regex. > temp = "abcd1234abcd1234" > regmatches(temp, gregexpr("(?:abcd)(1234)", temp)) [[1]] [1] "abcd1234" "abcd1234" What I would like is: [1] "1234" "1234" Note: I know I can just match 1234 here, but the actual examp...

Hi all, > diff_operator <- "\\(" > strsplit(cond, diff_operator) [[1]] [1] "andsin" "log_angle_1_4)" > diff_operator <- "\\sin(" > strsplit(cond, diff_operator) Error in strsplit(cond, diff_operator) : invalid regular expression '\sin(', reason 'Missing ')'' When I am going to split with "("

Recently, I upgraded MiKTeX to the latest versions, and since then there are problems when I try to build R and/or R packages. I tried to build R 1.9.0 beta and R 1.8.1 patched I am running Windows XP Pro, SP 1 MikTeX version is This is e-TeX, Version 3.141592-2.1 (MiKTeX 2.4) (preloaded format=latex 2004.3.27) fpTeX version is This is e-TeXk, Version 3.141592-2.1 (Web2c 7.5.2) (format=latex

I'm trying to write a simple function that does the following: [command] xify(5.2) [output] XXX.XX [command] xify(3) [output] XXX Any simple solutions (without using python/perl/unix script/...)? Thanks, Saghir --------------------------------------------------------- Legal Notice: This electronic mail and its attachments are i...{{dropped}}