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MrMetlHed writes "A portion of this Reuters article about the Pentagon's inability to manage paying soldiers properly mentions that their payroll program has 'seven million lines of Cobol code that hasn't been updated.' It goes on to mention that the documentation has been lost, and no one really knows how to update it well. In trying to replace the program, the Pentagon spent a billion dollars and wasn't successful."

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CowboyRobot writes "David Chisnall of the University of Cambridge describes how interfacing between languages is increasingly important. You can no longer expect a nontrivial application to be written in a single language. High-level languages typically call code written in lower-level languages as part of their standard libraries (for example, GUI rendering), but adding calls can be difficult. In particular, interfaces between two languages that are not C are often difficult to construct. Even relatively simple examples, such as bridging between C++ and Java, are not typically handled automatically and require a C interface. The problem of interfacing between languages is going to become increasingly important to compiler writers over the coming years."

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