Ruby String Interpolation Multiline

Multiline strings in ruby 2 3 the squiggly heredoc.

Ruby string interpolation multiline.

And it does not work in single quoted strings. A miscellanea of details on software design. In your own code choose the style that s right for you and be consistent. A style guide that reflects real world usage gets used while a style guide that holds to an ideal that has been rejected by the people it is supposed to help risks not getting used at.

Have you ever had to write a nicely indented multiline string in ruby. You ll encounter all of these methods as you work with existing ruby code as each project tends to have its own style. If you have you already know that ruby doesn t have a nice out of the box solution for this problem. Damir svrtan 3 min read.

Javascript doesn t support any kind of advanced string handling as of ecmascript 5 version 6 supports multi line strings and interpolation so to make it readable we have to handle it using the array syntax. Query sql select from food where healthy true sql you use this syntax to define a heredoc in ruby. This is used to embed snippets of code like sql or html. 1 1 is 1 1.

At least this outputs without any extra indentation. At least it hadn t until a week ago when the squiggly heredoc was introduced. Heredocs in ruby also supports string interpolation. In this case a b c creates a new string.

Foo this is the first line nthis is the second line n1 1 is 2 n note the absence of a leading newline character. This ruby style guide recommends best practices so that real world ruby programmers can write code that can be maintained by other real world ruby programmers. If you type the code above in your editor and syntax highlighting for ruby code is used it should highlight the code in the double quoted string so it gives you a visual clue about the interpolation. So why do people prefer string interpolation.

My str foo this is the first line. Concatenation looks like this. A nice to meet you b c do you like blueberries a b c nice to meet you do you like blueberries you can use the operator to append a string to another. As you can see there are a lot of ways to handle newlines and multiline strings in ruby.