Ruby combining an array into one string

Question

In Ruby is there a way to combine all array elements into one string?

Example Array:

@arr = [\'
Hello World
\', \'
This is a         


        

Answer 1

Use the Array#join method (the argument to join is what to insert between the strings - in this case a space):

@arr.join(" ")

Answer 2

While a bit more cryptic than join, you can also multiply the array by a string.

@arr * " "

Answer 3

Here's my solution:

@arr = ['<p>Hello World</p>', '<p>This is a test</p>']
@arr.reduce(:+)
=> <p>Hello World</p><p>This is a test</p>