Read a specific line from a file: Difference between revisions
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=={{header|Scala}}== |
=={{header|Scala}}== |
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===Discussion=== |
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The code will throw a <tt>NoSuchElementException</tt> if the file doesn't have 7 lines. |
The code will throw a <tt>NoSuchElementException</tt> if the file doesn't have 7 lines. |
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<lang scala>val lines = io.Source.fromFile("input.txt").getLines |
<lang scala>val lines = io.Source.fromFile("input.txt").getLines |
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val seventhLine = lines drop(6) next</lang> |
val seventhLine = lines drop(6) next</lang> |
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===Imperative version=== |
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Solving the task to the letter, imperative version: |
Solving the task to the letter, imperative version: |
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} |
} |
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if ("" == seventhLine) println("line is empty")</lang> |
if ("" == seventhLine) println("line is empty")</lang> |
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<lang scala>val file = try Left(io.Source.fromFile("input.txt")) catch { |
<lang scala>val file = try Left(io.Source.fromFile("input.txt")) catch { |
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case exc => Right(exc.getMessage) |
case exc => Right(exc.getMessage) |
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