decrement

What does “!–” do in JavaScript?

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I have this piece of code (taken from this question): var walk = function(dir, done) { var results = []; fs.readdir(dir, function(err, list) { if (err) return done(err); var pending = list.length; if (!pending) return done(null, results); list.forEach(function(file) { file = path.resolve(dir, file); fs.stat(file, function(err, stat) { if (stat && stat.isDirectory()) { walk(file, function(err, res) … Read more

Behaviour of increment and decrement operators in Python

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I notice that a pre-increment/decrement operator can be applied on a variable (like ++count). It compiles, but it does not actually change the value of the variable! What is the behavior of the pre-increment/decrement operators (++/–) in Python? Why does Python deviate from the behavior of these operators seen in C/C++? 1Best Answer 11 ++ … Read more