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No, because error variables have extremely limited scope and the length of a variable name should be proportional to its scope.

Heh, I always use longer name variables for broader scope somewhat naturally, but only after reading your comment realized that.

    if theErrorReturnedByThePreviousFunction != nil {

A real brogrammer can write COBOL in any language.

From which it follows that you should use the most terse names possible, in order to make it harder to write too-long functions.

(I am only half trolling).

I figure it's probably proportional to its importance and difficulty of understanding, as a longer more descriptive name aids in understanding, but things with broader scope tend to be more important.

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