The New York Stock Exchange (NYSE) had to extend its trading hours last Thursday just before the 4th of July holiday in the US because of what it called "system irregularities" caused by a computer server problem that reportedly affected network connectivity.

This follows another NYSE problem the day before when for three hours an incorrect online notice was posted indicating that American International Group Inc. (AIG) had been suspended and delisted.

The NYSE has been having a bad run of IT problems the past few weeks since it completed in June a computer system upgrade that allowed the exchange to process trades in 5 milliseconds. As I blogged here last month, NYSE trading in 242 stocks had to be suspended for about an hour because of another (but different) computer server problem.

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Why Functional Programming Should Be the Future of Software Development

It’s hard to learn, but your code will produce fewer nasty surprises

11 min read
A plate of spaghetti made from code
Shira Inbar

You’d expectthe longest and most costly phase in the lifecycle of a software product to be the initial development of the system, when all those great features are first imagined and then created. In fact, the hardest part comes later, during the maintenance phase. That’s when programmers pay the price for the shortcuts they took during development.

So why did they take shortcuts? Maybe they didn’t realize that they were cutting any corners. Only when their code was deployed and exercised by a lot of users did its hidden flaws come to light. And maybe the developers were rushed. Time-to-market pressures would almost guarantee that their software will contain more bugs than it would otherwise.

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