callable

What is a “callable”?

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Now that it’s clear what a metaclass is, there is an associated concept that I use all the time without knowing what it really means. I suppose everybody made once a mistake with parenthesis, resulting in an “object is not callable” exception. What’s more, using __init__ and __new__ lead to wonder what this bloody __call__ … Read more

The difference between the Runnable and Callable interfaces in Java

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What is the difference between using the Runnable and Callable interfaces when designing a concurrent thread in Java, why would you choose one over the other? 14 s 14 See explanation here. The Callable interface is similar to Runnable, in that both are designed for classes whose instances are potentially executed by another thread. A … Read more