Calling thereplacemethod on aStringresults in returning a new modified string. The original string is not changed. sb.setCharAt(0, 'K') sb.setCharAt(2, 't') ThesetCharAtmethod of aStringBuilderwill replace a character at the given index with a new character. The original string is modified....
String interpolationString interpolation is defining a string literal with one or more placeholders, these placeholders are to be replaced with variables or expressions while the final compilation of the result.Exampleobject MyClass { def main(args: Array[String]) { var bikename = "KTM Duke 390"...
This book provides astep-by-stepguide for thecomplete beginnerto learn Scala. It is particularly useful to programmers, data scientists, big data engineers, students, or just about anyone who wants toget up to speed fastwith Scala (especially within an enterprise context). You get to build a...
WithScalait’s common to embed variables in strings like this with thesstring interpolator: val name = "Fred" println(s"My name is $name.") That’s cool, but when you need to format your string, Scala gives you an even more powerful tool: thefstring interpolator. The Scala 'f' strin...
implicit def binder: Formatter[UnitMeasurement] = new Formatter[UnitMeasurement] { override def bind( key: String, data: Map[String, String] ): Either[Seq[FormError], UnitMeasurement] = Formats.parsing( d => UnitMeasurement.fromString(d), "The format is (\\d*)(\\s)(\\D*)- example...
It is used to reduce error while representing floating-point format.1. Implicit and Explicit ConversionScala has both Explicit and Implicit type conversion. Implicit occurs automatically when context requires it. Whereas, developers can do explicit conversion when required. For example,...
FindDotIsDefined find(x => ).isDefined can be replaced with exist(x => ) Info IllegalFormatString Looks for invalid format strings Error ImpossibleOptionSizeCondition Checks for code like option.size > 2 which can never be true Error IncorrectNumberOfArgsToFormat Checks for wrong number of ar...
// into. Necessary to convert the RichString back into String after the reversal word == word.reverse.toString() } def fitsDescription(miles: Int): Boolean = { // Last 4 are palindome (dropping first 2) isPalindrome(df.format(miles).drop(2)) && // Add one, last 5 are palindrome...
scala> val x: Int = "Hello" <console>:7: error: type mismatch; found : String("Hello") required: Int val x: Int = "Hello" The error here affirms that an Int type cannot be used to store a String. Variables In computer science the term variable typically refers to a unique identi...
I am raising it here because I have no idea how this can happen. Restarting the presentation compiler doesn't help only restarting the whole JVM does. It's also not possible to reproduce it reliably. What is more when debugging I managed...