Handling runtime errors
EPL eliminates many runtime errors because of the following:
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Strict, static typing, so there are no class cast exceptions.
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No implicit type conversion so there are no number format exceptions.
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No concept of null, so there are no null pointer exceptions.
However, EPL cannot entirely eliminate runtime errors. For example, you receive a runtime error if you try to divide by zero or specify an array index that is out of bounds. Some runtime errors are obscure. For example:
mySeq.remove(mySeq.indexOf("foo"));
If foo is not in mySeq, indexOf() returns –1, which causes a runtime error.