Ruby String Replace Special Characters

Sometimes it s useful to work with the individual characters of a string.

Ruby string replace special characters.

Method directly modify the string object on which the method was called. One way to do that is to use the each char method. Rubyguides each char ch puts ch you can also use the chars method to convert the string into an array of characters. Value gsub w ly rep puts value output rep rep or rep regexp pattern w one or more word characters.

Unicode is a string encoding system that can represent up to a million different characters. That s a lot more space than ascii. Methods provide another quick and easy way of replacing a substring with another string. Ly the lowercase substring ly.

Ruby program that uses gsub with regexp value quickly slowly or happily replace all word sending with ly with a string. Now we can include characters from all sorts of languages new symbols even emojis. The backslash character tells ruby to ignore any special meaning the next character may have. ɑωϕβσπ these are characters from the greek alphabet which can t be displayed using ascii.

The text within the quote marks is the value of the string this is a simple ruby string literal. If it s a matching quote character don t end the string. The gsub and gsub. Iterate over characters of a string in ruby.

A string object in ruby holds and manipulates an arbitrary sequence of one or more bytes typically representing characters that represent human language. The following example demonstrates this use of backslash to escape special characters. The simplest string literals are enclosed in single quotes the apostrophe character.