An invisible U+00ad character is hidden there as the variable name.

The instruction should be made more clear

• (int) was added to cast vector.size() to type int from unsigned long or std::size_t. If you don't add it, there will be compile time warning.
• std::pow is the standard C++ function. pow was derived from C stdlib.

I'm not an expert but, IIUC, there are more efficient solutions here. This one is O(n log n) due to sorting. But there are some that use either std::map or vectors to keep counts of each letter in each string. Those should be O(n).

PEP 8 (the official style guide) literally advises against using lambda expressions.

Two questions:

• Why add (int) before vector.size()?
• Any reason to write std::pow instead of just pow? The latter works fine.

To avoid copying of a std::vector

What's the reason for changing the function signature?

What's the point of changing the signature of the function?

I find it really weird that Haxe doesn't have a function or a method to retrieve a maximum from an array :S

How does this actually work? I understand that an unnamed parameter is used here. But how is it passed to the abs function? I cannot find anything about it in the documentation.

[updated wiki link](https://en.wikipedia.org/wiki/Guard_(computer_science)