errorTrap
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errorTrap
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The errorTrap function evaluates the first expression. If an Error value
results, the second expression is evaluated. The Error value is trapped by the
function instead of returning to the top level console as would occur if an error
function was used.
Usage The errorTrap function is used if you didn't want to exit to the top level
console if an error occurred. One could therefore trap the error and performed some
other action once the error is trapped.
(errorTrap exp1 exp2) The result of expr1 (if no error).
Expression:
Arguments
Name
Type
Description Argument: exp1 ---
The expression to be evaluated. Argument: exp2 ---
The expression to be evaluated if an error occurred.
Returns:
Here are a number of links to Lambda coding examples which contain this instruction in various use cases.
Here are the links to the data types of the function arguments.
| Error |
Here are also a number of links to functions having arguments with any of these data types.
| errorTrap | error | isIdentical | string |
| sysError |
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