nul

I've got a strange text file with a bunch of NUL characters in it (actually about 10 such files), and I'd like to programmatically replace them from within R. Here is a link to one of the files. With the aid of this question I've finally figured out a better-than- ad-hoc way of going into each file and find-and-replacing the nuisance characters. It turns out that each pair of them should correspond to one space ( [NUL][NUL] -> ) to maintain the intended line width of the file (which is crucial for reading these as fixed-width further down the road). However, for robustness' sake, I prefer a

From the web I understand that C contains NUL keyword. But while compiling I get an error NUL undeclared first use in this function' My code fragment: for (;;) { char ch = (*pzDest = *pzSrc); if (ch == NUL) break; if (ch == ':') { *pzDest = NUL; break; } pzDest++; pzSrc++; } Any idea why I get this error? There's NULL and then there's NUL . NULL is defined in stddef.h, is used very widely, and is a reference to a null pointer. NUL is different - it is the first character in the standard ASCII character set, and more importantly, it is not a standard macro . You may have to define it yourself.

I usually use the following Python code to read lines from a file : f = open('./my.csv', 'r') for line in f: print line But how about if the file is line delimited by "\0" (not "\n") ? Is there a Python module that could handle this ? Thanks for any advice. If your file is small enough that you can read it all into memory you can use split: for line in f.read().split('\0'): print line Otherwise you might want to try this recipe from the discussion about this feature request : def fileLineIter(inputFile, inputNewline="\n", outputNewline=None, readSize=8192): """Like the normal file iter but you

Testing out someone elses code, I noticed a few JSP pages printing funky non-ASCII characters. Taking a dip into the source I found this tidbit: // remove any periods from first name e.g. Mr. John --> Mr John firstName = firstName.trim().replace('.','\0'); Does replacing a character in a String with a null character even work in Java? I know that '\0' will terminate a C-string. Would this be the culprit to the funky characters? Does replacing a character in a String with a null character even work in Java? I know that '\0' will terminate a c-string. That depends on how you define what is