Camel case and snake case: Difference between revisions
Add Scala implementation
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(Add Scala implementation) |
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Line 2,099:
c://my-docs/happy_Flag-Day/12.doc ==> c://my-docs/happy_Flag-Day/12.doc
spaces ==> spaces</pre>
=={{header|Scala}}==
{{trans|Java}}
<syntaxhighlight lang="Scala">
object CamelCaseAndSnakeCase extends App {
val variableNames = List("snakeCase", "snake_case", "variable_10_case", "variable10Case",
"ergo rE tHis", "hurry-up-joe!", "c://my-docs/happy_Flag-Day/12.doc", " spaces ")
println(" " * 26 + "=== To snake_case ===")
variableNames.foreach { text =>
println(f"$text%34s --> ${toSnakeCase(text)}")
}
println("\n" + " " * 26 + "=== To camelCase ===")
variableNames.foreach { text =>
println(f"$text%34s --> ${toCamelCase(text)}")
}
def toSnakeCase(camel: String): String = {
val snake = new StringBuilder
camel.trim.replace(" ", "_").replace("-", "_").foreach { ch =>
if (snake.isEmpty || snake.last != '_' || ch != '_') {
if (ch.isUpper && snake.nonEmpty && snake.last != '_') snake.append('_')
snake.append(ch.toLower)
}
}
snake.toString
}
def toCamelCase(snake: String): String = {
val camel = new StringBuilder
var underscore = false
snake.trim.replace(" ", "_").replace("-", "_").foreach { ch =>
if (ch == '_') underscore = true
else if (underscore) {
camel.append(ch.toUpper)
underscore = false
} else camel.append(ch)
}
camel.toString
}
}
</syntaxhighlight>
{{out}}
<pre>
=== To snake_case ===
snakeCase --> snake_case
snake_case --> snake_case
variable_10_case --> variable_10_case
variable10Case --> variable10_case
ergo rE tHis --> ergo_r_e_t_his
hurry-up-joe! --> hurry_up_joe!
c://my-docs/happy_Flag-Day/12.doc --> c://my_docs/happy_flag_day/12.doc
spaces --> spaces
=== To camelCase ===
snakeCase --> snakeCase
snake_case --> snakeCase
variable_10_case --> variable10Case
variable10Case --> variable10Case
ergo rE tHis --> ergoRETHis
hurry-up-joe! --> hurryUpJoe!
c://my-docs/happy_Flag-Day/12.doc --> c://myDocs/happyFlagDay/12.doc
spaces --> spaces
</pre>
=={{header|V (Vlang)}}==
{{trans|go}}
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