I’m using TypeScript for a reasonably large project, and am wondering what the standard is for the use of Errors. For example, say I hand an index out of bounds exception in Java: throw new IndexOutOfBoundsException(); Would the equivalent statement in TypeScript be: throw new Error(“Index Out of Bounds”); What other ways could I accomplish … Read more
To avoid all standard-answers I could have Googled on, I will provide an example you all can attack at will. C# and Java (and too many others) have with plenty of types some of ‘overflow’ behaviour I don’t like at all (e.g type.MaxValue + type.SmallestValue == type.MinValue for example : int.MaxValue + 1 == int.MinValue). … Read more
When is it right for a constructor to throw an exception? (Or in the case of Objective C: when is it right for an init’er to return nil?) It seems to me that a constructor should fail — and thus refuse to create an object — if the object isn’t complete. I.e., the constructor should … Read more
I have always been of the belief that if a method can throw an exception then it is reckless not to protect this call with a meaningful try block. I just posted ‘You should ALWAYS wrap calls that can throw in try, catch blocks.‘ to this question and was told that it was ‘remarkably bad … Read more
I have exceptions created for every condition that my application does not expect. UserNameNotValidException, PasswordNotCorrectException etc. However I was told I should not create exceptions for those conditions. In my UML those ARE exceptions to the main flow, so why should it not be an exception? Any guidance or best practices for creating exceptions? 32 … Read more
Recently I ran into this error in my web application: java.lang.OutOfMemoryError: PermGen space It’s a typical Hibernate/JPA + IceFaces/JSF application running on Tomcat 6 and JDK 1.6. Apparently this can occur after redeploying an application a few times. What causes it and what can be done to avoid it? How do I fix the problem? … Read more
