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Josh Bloch on the Semantic Gap

In his post "Josh Bloch on the Semantic Gap", Bill Venners provides commentary on the Mind the Semantic Gap workshop that took place at last week's JVM Language Summit:

At the JVM Languages Summit, Josh Bloch expressed his concern about what he called the "semantic gap" between the source code we write and its performance at runtime: As performance improves, our ability to predict the performance consequences of our source code degrades...

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