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.
Ruby string interpolation multiline.
This is used to embed snippets of code like sql or html.
A miscellanea of details on software design.
In this case a b c creates a new string.
As you can see there are a lot of ways to handle newlines and multiline strings in ruby.
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.
Damir svrtan 3 min read.
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.
At least it hadn t until a week ago when the squiggly heredoc was introduced.
Concatenation looks like this.
In your own code choose the style that s right for you and be consistent.
Query sql select from food where healthy true sql you use this syntax to define a heredoc in ruby.
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.
So why do people prefer string interpolation.
And it does not work in single quoted strings.
Have you ever had to write a nicely indented multiline string in ruby.
My str foo this is the first line.
1 1 is 1 1.
Foo this is the first line nthis is the second line n1 1 is 2 n note the absence of a leading newline character.
A heredoc is a way to define a multiline string while maintaining the original indentation formatting.
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.
At least this outputs without any extra indentation.
If you have you already know that ruby doesn t have a nice out of the box solution for this problem.
Multiline strings in ruby 2 3 the squiggly heredoc.
A string literal or anonymous string is a type of literal in programming for the representation of a string value within the source code of a computer program most often in modern languages this is a quoted sequence of characters formally bracketed delimiters as in x foo where foo is a string literal with value foo the quotes are not part of the value and one must use a method.
