references (1,301)


algorithm - Graph serialization

algorithm - Graph serialization

I'm looking for a simple algorithm to 'serialize' a directed graph. In particular I've got a set of files with interdependencies on their execution order, and I want to find the correct order at compi…


c++ - What are the barriers to understanding pointers and what can be done to overcome them?

Why are pointers such a leading factor of confusion for many new, and even old, college level students in C or C++? Are there any tools or thought processes that helped you understand how pointers wor…


Lingering assembly dependency in C#.NET

My C# project-we'll call it the SuperUI-used to make use of a class from an external assembly. Now it doesn't, but the compiler won't let me build the project without the assembly reference in pl…


How can I determine the type of a blessed reference in Perl?

In Perl, an object is just a reference to any of the basic Perl data types that has been blessed into a particular class. When you use the ref() function on an unblessed reference, you are told what…


sql - Possible to perform cross-database queries with postgres?

I'm going to guess that the answer is no based on the below error message(and this Google result), but is there anyway to perform a cross-database query using Postgres? databaseA=# select*from data…


ms access - How to Prevent the “Please tell Microsoft about this problem” Dialog Boxes

We have an error that we can't seem to find and don't have the need/resources to try and track it down. What we do need to do is just keep the freaking "Please tell Microsoft about this problem" dia…


What are the differences between a pointer variable and a reference variable in C++?

I know references are syntactic sugar, so code is easier to read and write. But what are the differences? Summary from answers and links below: A pointer can be re-assigned any number of times while…


What is the best tool to find which DLL another VB6 DLL is referenced to?

This is an antique problem with VB6 DLL and COM objects but I still face it day to day. What is the best tool to see which DLL file or version another DLL is referencing to? Of course, this is from t…


.net - Remove unused references(!= “using”)

How can I find and delete unused references in my projects? I know you can easily remove the using statements in vs 2008, but this doesn't remove the actual reference in your projects. The reference…


java - Compound keys in JPA

I want to make an entity that has an autogenerated primary key, but also a unique compound key made up of two other fields. How do I do this in JPA? I want to do this because the primary key should b…





reference and the pdf for how not with example pointers