mystring.replace() syntax example?

you want either swap(oldstring,newstring) to have oldstring=newstring and newstring=oldstring or data.replace(data.find(oldstring),oldstring.length(),newstring);

find returns the first index of the occurance of the substring pattern in string, length you know, and the third param is the substring to insert.

to replace every occurance of a in s with b

global_replace(string &s,const string &a, const string &b) {
  for(size_t pos=s.find(a);pos != string::npos;pos = s.find(a,pos)) {
    s.replace(pos,a.length(),b);
  }
}
  

the rough C equivilent of replace would look like

replace(char *s,int start, int end,char *substr) {
  char *tail = strdup(s+end+1);
  s[start] = '\0';
  strcat(s,substr);
  strcat(s,tail);
  free(tail);
}
 

replace includes lots of extra magic though.


Edited by - Grib on September 4, 2000 1:49:55 AM

Edited by - Grib on September 4, 2000 1:50:32 AM
Lots of edits

Edited by - Grib on September 4, 2000 1:52:01 AM