Quoted, Interpolated and Escaped Strings in Julia

String in Julia is a finite sequence of characters. The string can consist of numerals, common punctual symbols, a single word, a group of words, or a multi-line paragraph. Julia allows us to use and manipulate the data in the strings in many ways. Julia also offers a few high-level features for the strings. Some of these features are further discussed in this article.

Quoted Strings

Julia offers us to create strings using double-quotes (" "), and triple-quotes (''' ''') as well. Double-quoted strings are treated normally but triple-quoted strings have some extra features available to them.

Double-quoted strings

These types of strings are treated normally in Julia like in any other language. Operations like concatenation and interpolation are allowed in double-quoted strings. 

# create three double-quoted strings
s1 = "Geeks"
s2 = "for"
s3 = "geeks"

# concatenating strings
s = "s1, s2, s3"

Triple-quoted strings

These types of strings have special behaviors in Julia which are helpful to create long blocks of text. Triple-quoted strings are useful to use in codes that are indented because they recognize new lines.

# create a triple-quoted string
str = """
      Geeks,
      for,
      geeks
      
    """

A new line after the first triple quotes is not considered:

# create string literal
"""
Geeks"""

#  create string literal with new line
"""

Geeks"""

Interpolation of strings

Doing concatenation on strings sometimes can get inconvenient, to tackle this Julia offers interpolation into string literals using $.

# create three strings
s1 = "Geeks"
s2 = "for"
s3 = "geeks"

# interpolation using $
"$s1 $s2 $s3"

In Julia, the interpolation operation can be done in a part of a string literal using parentheses:

# interpolation using parentheses
"2 + 4 = $(2 + 4)"

Escaped strings

To include any character in the string, we have to place a backslash (\) before it:

# placing $ in string
print("I want 1000\$ in my bank account")

We can also escape double-quotes using backslash:

# escaping double quotes
str = "This is \"Geeksforgeeks\"."

print(str)