This is called double-checked locking. It is hard to read and easy to break. Instead, use one line: cache.computeIfAbsent (key, this::expensiveCalculation); This method is atomic. It ensures the ...
On the one hand, I was having trouble with a Java library that ran a sub-process using a pseudo-tty, and Sonnet was quite happy to find and analyze the Java source, then the underlying native C source ...
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