1. Ruby Append String After Match
2. Ruby Concat String And Number
3. Ruby Concat String And Variable
4. Strcat
5. Ruby Append List
6. Ruby Concatenate String And Variable

It's common to need to join strings, and in Ruby we have common ways of doing it: appending, concatenating and interpolating one into the other, or using the built-in concat method in String. (We have multiple ways of doing it for flexibility and to ease the transition from other languages to Ruby.).

Is there a way to make this look a little better?

Like, is there a way to imply concatenation?

1. Dec 01, 2016  To append to an existing string this is what I am doing. S = 'hello' s.gsub!(/$/, ' world'); Is there a better way to append to an existing string. Before someone suggests following answer lemme show that this one does not work. S = 'hello' s.objectid s = s + ' world' s.objectid In the above case objectid will be different for two cases.
2. A string is a sequence of one or more characters that may consist of letters, numbers, or symbols. In this tutorial, you'll learn how to work with strings in Ruby. You'll create strings, display them on the screen, store them in variables, join multip.
3. A String object holds and manipulates an arbitrary sequence of bytes, typically representing characters. String objects may be created using String::new or as literals. Because of aliasing issues, users of strings should be aware of the methods that modify the contents of a String object.
4. Jan 01, 2009  The first section of the chapter shows the most basic and common way to create an array, but there are alternatives (in Ruby, there are always alternatives). You can start by creating a new empty array by doing either Figure 4.8 Four elements are added to an array. The first two lines demonstrate.

derobertZombiesZombies

13 Answers

There are pieces to this answer that helped me get what I needed (easy multi-line concatenation WITHOUT extra whitespace), but since none of the actual answers had it, I'm compiling them here:

As a bonus, here's a version using funny HEREDOC syntax (via this link):

The latter would mostly be for situations that required more flexibility in the processing. I personally don't like it, it puts the processing in a weird place w.r.t. the string (i.e., in front of it, but using instance methods that usually come afterward), but it's there. Note that if you are indenting the last END_SQL identifier (which is common, since this is probably inside a function or module), you will need to use the hyphenated syntax (that is, p <<-END_SQL instead of p <<END_SQL). Otherwise, the indenting whitespace causes the identifier to be interpreted as a continuation of the string.

This doesn't save much typing, but it looks nicer than using + signs, to me.

EDIT: Adding one more:

A. WilsonA. Wilson

Yes, if you don't mind the extra newlines being inserted:

Alternatively you can use a heredoc:

smile2dayMark Byers

Ruby Append String After Match

Mark ByersRobbie GuilfoyleRobbie Guilfoyle

There are multiple syntaxes for multi-line strings as you've already read. My favorite is Perl-style:

The multi-line string starts with %q, followed by a {, [ or (, and then terminated by the corresponding reversed character. %q does not allow interpolation; %Q does so you can write things like this:

I actually have no idea how these kinds of multi-line strings are called so let's just call them Perl multilines.

Note however that whether you use Perl multilines or heredocs as Mark and Peter have suggested, you'll end up with potentially unnecessary whitespaces. Both in my examples and their examples, the 'from' and 'where' lines contain leading whitespaces because of their indentation in the code. If this whitespace is not desired then you must use concatenated strings as you are doing now.

HongliHongli

Sometimes is worth to remove new line characters n like:

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Kamil LelonekKamil Lelonek

You can also use double quotes

If needed to remove line breaks 'n' use backslash ' at the end of each line

Peter

Ruby Concat String And Number

PeterAlex CohenAlex Cohen

Recently with the new features in Ruby 2.3 the new squiggly HEREDOC will let you write our multiline strings in a nice manner with a minimal change so using this combined with the .squish will let you write multiline in a nice way!

Ruby Concat String And Variable

ref: https://infinum.co/the-capsized-eight/multiline-strings-ruby-2-3-0-the-squiggly-heredoc

If you do mind extra spaces and newlines, you can use

(use %W for interpolated strings)

Strcat

This suggestion has the advantage over here-documents and long strings that auto-indenters can indent each part of the string appropriately. But it comes at an efficiency cost.

Ruby Append List

To avoid closing the parentheses for each line you can simply use double quotes with a backslash to escape the newline:

Ruby Concatenate String And Variable

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