< > BotCompany Repo | #1025710 // fastJoin - quicker string join on list of non-null strings

JavaX fragment (include) [tags: use-pretranspiled]

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sS fastJoin(LS l) {
  if (empty(l)) ret "";
  int n = 0;
  for (S s : l) n += s.length();
  char[] buf = new[n];
  n = 0;
  for (S s : l) {
    int x = s.length();
    s.getChars(0, x, buf, n);
    n += x;
  }
  ret new S(buf);
}

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