Method retainFrom

output/java_guava/1.4.16/CharMatcher.java:817–819

Returns a string containing all matching characters of a character sequence, in order. For example: CharMatcher.is('a').retainFrom("bazaar") ... returns "aaa".

(CharSequence sequence)

  public String retainFrom(CharSequence sequence) {
    return negate().removeFrom(sequence);
         }

  /**
   * Returns a string copy of the input character sequence, with each character that matches this