Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 234', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Returns a string representation of the object. See . Removes the taint from the object. Strings and Regular Expressions Death taxes and . processing text. Yes these are virtually inescapable in a programmer s life. In Ruby I share your pain. Using the String Regexp and MatchData classes Ruby provides sharp tools to slice dice and manipulate text to your heart s content. String Character String class String is one of Ruby s basic datatypes which contain arbitrary sequences of bytes. String can contain 0. Included Module Enumerable Comparable Class Method String new str Creates a string. Instance Methods Methods of the String class ending in modify their receiver and return a string if modification took place otherwise nil. Methods without a return a modified copy of the string. s Attempts to match pattern s against the _ variable. This method is obsolete. s arg An abbreviated form of sprintf s arg. . Multiple elements are specified using an array. s n Returns a string consisting of s copied end to end n times. s str Returns a string with str concatenated to s. s str Concatenates str to s. s x Performs a regular expression match. If x is a string it s turned into a Regexp object. s n Returns the code of the character at position n. If n is negative it s counted as an offset from the end of the string. s n. m s n len Returns a partial string. bar ar bar ar bar ar bar ar bar 1 2 ar bar -1 1 r s n value Replaces the n th element in the string with value. value may be a character code or string. s n. m str s n len str Replaces a part of the string with str. .capitalize Returns a copy of s with the first character converted to uppercase and the remainder to lowercase. fooBar .capitalize Foobar w Returns a string of length w with s centered in the middle. s is padded with spaces if it has a length of less than w. foo .center 10 foo foo .center 2 foo rs rs Deletes the record separator .
