![\"Scala](\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/04\/String-Interpolation-in-Scala-01.jpg\")
<\/a>Scala String Interpolation | s String, f String and raw string Interpolator<\/p><\/div>\n
Introduction to Interpolation in String<\/h3>\n
Scala String Interpolation is a new way to create them. But we didn\u2019t always have this feature at hand. This was introduced in Scala 2.10, and is available in all newer versions as well.<\/p>\n
By interpolating a string, we can embed variable references directly in a processed string literal. We have three kinds of Scala String interpolators. Let\u2019s see them one by one.<\/p>\n
s String Interpolator<\/h3>\n
When we prepend \u2018s\u2019 to any string, we can directly use variables in it with the use of the \u2018$\u2019 character. But that variable should be in scope in that string; it should be visible. Well, \u2018s\u2019 is a method.<\/p>\n
scala> val name=\"Ayushi\"\r\nname: String = Ayushi\r\nscala> println(s\"Hello, $name, how are you?\")\r\nHello, Ayushi, how are you?\r\nSee how simple that was? We can also process arbitrary expressions using ${}.\r\nscala> println(s\"Hello, 2+3 is ${2+3}\")<\/pre>\nHello, 2+3 is 5<\/p>\n
scala> println(s\"Is 2+3 equal to 5? That is ${2+3==5}\")<\/pre>\nIs 2+3 equal to 5? That is true<\/p>\n
We\u2019ll also see this with case classes later.<\/p>\n
f String Interpolator<\/h3>\n
Let\u2019s first see the problem with the s interpolator.<\/p>\n
scala> val a=77.000<\/pre>\na: Double = 77.0<\/p>\n
scala> println(s\"The number is $a\")<\/pre>\nThe number is 77.0<\/p>\n
This prints 77.0, not 77.000.<\/p>\n
Now, see this with the f interpolator.<\/p>\n
scala> println(f\"The number is $a%.3f\")<\/pre>\nThe number is 77.000<\/p>\n
This is quite like the printf style format specifiers in C. These are %d, %i, %f, and so on.<\/p>\n
scala> println(f\"$name%s says the number is $a%.3f\")<\/pre>\nAyushi says the number is 77.000<\/p>\n
This is type-safe. If the variable reference and the format specifier don\u2019t match, it raises an error. By default, the specifier is %s. Next in Scala String Interpolation is raw String Interpolator.<\/p>\n
raw String Interpolator<\/h3>\n
raw is like s, except that it doesn\u2019t escape literals within a string.<\/p>\n
scala> println(raw\"$name says the number is $a\\nOkay, bye\")<\/pre>\nAyushi says the number is 77.0\\nOkay, bye<\/p>\n
The same with s will give:<\/p>\n
scala> println(s\"$name says the number is $a\\nOkay, bye\")<\/pre>\nAyushi says the number is 77.0<\/p>\n
Okay, bye<\/p>\n
This tells us that the raw interpolator interpolates the string in a very raw sense.<\/p>\n
So, this was all about Scala String Interpolation. Hope you like our explanation.<\/p>\n
Conclusion<\/h3>\n
Hence, we discussed three types of Scala string interpolators:\u00a0s String Interpolator,\u00a0f String Interpolator, and raw String Interpolator in Scala with their examples. Furthermore, if you have any query, feel free to ask in the comment session.<\/p>\n
Reference<\/a><\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"Scala String Interpolation Today in Scala String Interpolation tutorial, we will discuss the string interpolators \u2018s\u2019, \u2018f\u2019, and \u2018raw\u2019 with their examples. So, let’s start Scala String Interpolation Tutorial. Introduction to Interpolation in String...<\/p>\n","protected":false},"author":6,"featured_media":31082,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[12445,12537,12544,12554],"class_list":["post-13369","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-scala","tag-scala-f-screen-interpolator","tag-scala-raw-string-interpolator","tag-scala-s-string-interpolator","tag-scala-string-interpolation"],"yoast_head":"\n
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