When should I throw an exception?
Andy Mc's C# FAQ for C++ programmersThis is the subject of some debate, and is partly a matter of taste. However, it is accepted by many that exceptions should be thrown only when an 'unexpected' error occurs. How do you decide if an error is expected or unexpected? This is a judgement call, but a straightforward example of an expected error is failing to read from a file because the seek pointer is at the end of the file, whereas an example of an unexpected error is failing to allocate memory from the heap.
Can my module code throw an Exception?
ALG: D2K FAQsYes. If an Exception is thrown from the module's code it is catched by the toolkit and transformed into a message box, detailing the type of the exception and its message, if any. So it is highly recommended to add messages to thrown Exceptions in the module's code.
How do I throw a CUserException derived exception?
MFC Visual C++ FAQ version 4.0 Windows Programming OLE VBX O...When I try to catch a derived exception I get the following error: error C2039: 'classCMyException' : is not a member of 'CMyException' 'classCMyException' : undeclared identifier 'IsKindOf' : cannot convert parameter 1 from 'int*' to 'const struct CRuntimeClass*' You need to make your CMyException class dynamically creatable using the DECLARE_DYNAMIC() and IMPLEMENT_DYNAMIC() macros. The CATCH macro expects to be able to access run-time information about the thrown class.
What does throw; (without an exception object after the throw keyword) mean? Where would I use it?
Exceptions and error handling Updated! , C++ FAQ LiteIn this example, the statement throw; means "re-throw the current exception." Here, a function caught an exception (by non-const reference), modified the exception (by adding information to it), and then re-threw the exception. This idiom can be used to implement a simple form of stack-trace, by adding appropriate catch clauses in the important functions of your program.
If you manually throw an exception in the EJB, does the Client receive this exception?
Frequently asked questions about WebSphere 4.0If you only have client DB2 installed on your client, you may need to enter the db2cdb2 entry in the services file. Change the name of database to the alias name (was2 in our example): com.ibm.ejs.sm.adminServer.dbdatabaseName=was2. If you have it as "true," it will recreate the entire WAS repository tables. So, don't do it, unless you really want to.
Why does my custom step method throw a null pointer exception?
Animation: a Processing extensionIf you're calling image() inside your method, and the Animation doesn't have an image defined (if, for example, another Animation is nested inside of it), then image() will return null. You'll need to handle the case that image() returns null in order for your custom step method to work as a step method for a nested animation.
Why does my client throw exception "Invoke on non-existent proxy method"?
XML-RPC.NET FAQThis problem can occur when the first parameter to Invoke is the current method name and not the return value from MethodBase.CurrentMethod(). When manually implementing a proxy method there are two method names involved: the name of the proxy method and the name of the XML-RPC method.
What should I throw?
Exceptions and error handling Updated! , C++ FAQ LiteGenerally, it's best to throw objects, not built-ins. If possible, you should throw instances of classes that derive (ultimately) from the std::exception class.
What is the Traded Player exception?
NBA Salary Cap FAQdescribed in question number 67, exceptions are the mechanisms that allow teams to function above the salary cap. Any trade which results in the team ending up over the salary cap requires an exception. This is true even if the team is moving downward in salary. For example, if the salary cap is $50 million, a team has a team salary of $55 million, and they want to trade a $5 million player for a $4 million player, they still have to use an exception.
Is there an exception or defense?
FAQ about Fan Fiction -- Chilling Effects ClearinghouseEven if there is infringement, then the author still may have an exception or defense available to her. For example, if an artist violates the performance/display right, an exception for classroom, religious or nonprofit performances may save her from liability. The most important defense for fan fiction authors, however, is "fair use.
What is an Exception?
Windsor Rx > Frequently Asked Questions (FAQs)There are two types of exceptions. A Formulary Exception should be requested to obtain a Part D drug that is not included on a plan sponsor’s formulary.
Can I throw it away?
Frequently Asked Questions | Haru Hot Pads | ph 03 5024 7335Once the pad is cold (after 12 or more hours) it should be thoughtfully disposed of. Although the heat packs are biodegradable, they should not be composted due to the high iron and salt content.
G.5.i. What is the "back office" exception?
Section 508 Acquisition FAQ'sThe so-called "back office" exception, discussed at section 1194.3 of the Access Board's standards, states that "Products located in spaces frequented only by service personnel for maintenance, repair, or occasional monitoring of equipment are not required to comply with this part."
i. What is the undue burden exception?
Section 508 Acquisition FAQ'sAgencies do not have to acquire EIT that meets the applicable technical provisions if doing so would impose an undue burden on the agency. Undue burden is a longstanding concept in disability rights law. In the context of section 508, it means that an acquisition imposes a significant difficulty or expense, taking into account all agency resources available to the program or component for which the EIT is being procured. 36 CFR 1194.4 and FAR 39.202, 39.204(e)(1).
Do stored procedures provide exception handling?
Appendix A. Frequently Asked Questions About MySQL 5.1MySQL implements HANDLER definitions according to the SQL standard. See Section 18.2.8.2, "DECLARE Handlers", for details.
What is the exception to providing notice to interested parties?
FAQs About The 2006 VFCP Updatethe excise tax otherwise payable to the IRS is paid to the plan, and allocated to participants and beneficiaries as earnings would be, you send us a copy of the IRS Form 5330 used to determine the amount, or the same information that would be entered on the IRS Form 5330, and For the sole purpose of determining the amount of the excise tax discussed above, you may use the Online Calculator to determine the "amount involved".
How do I write a test that passes when an expected exception is thrown?
JUnit FAQAdd the optional expected attribute to the @Test annotation. The following is an example test that passes when the expected IndexOutOfBoundsException is raised: Test(expected=IndexOutOfBoundsException.class) public void testIndexOutOfBoundsException() { ArrayList emptyList = new ArrayList(); Object o = emptyList.get(0); }
How do I write a test that fails when an unexpected exception is thrown?
JUnit FAQDeclare the exception in the throws clause of the test method and don't catch the exception within the test method. Uncaught exceptions will cause the test to fail with an error. Test public void testIndexOutOfBoundsExceptionNotRaised() throws IndexOutOfBoundsException { ArrayList emptyList = new ArrayList(); Object o = emptyList.get(0); }
