F# Example Without try With

by Online Tutorials Library July 14, 2022

F# Exception Handling using Try-With Block

F# provides try-with keyword to handle exception. Try block is used to enclose suspect code. The with block works as handler to handle the exception thrown by try block. Let’s see an Example.

  let ExExample a b =    let mutable c = 0    try      c <- (a/b)    with      | :? System.DivideByZeroException as e -> printfn “%s” e.Message    printfn “Rest of the code”    ExExample 10 0  

Output:

Attempted to divide by zero.  Rest of the code

F# Try-Finally Example if Exception is Handled

Try-Finally block is used to release resources after exception occur. Resources may be input, output, memory or network etc.

  let ExExample a b =      let mutable c = 0      try          try              c <- (a/b)          with              | :? System.DivideByZeroException as e -> printfn “%s” e.Message      finally           printfn “Finally block is executed”      printfn “Rest of the code”    ExExample 10 0  

Output:

Attempted to divide by zero.  Finally block is executed  Rest of the code

Next TopicF# User Defined Exceptions

F# Example Without try With

F# Exception Handling using Try-With Block

F# Try-Finally Example if Exception is Handled

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