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What is __future__ in Python used for and how/when to use it, and how it works
...requently appears in Python modules. I do not understand what __future__ is for and how/when to use it even after reading the Python's __future__ doc .
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What is the difference between List (of T) and Collection(of T)?
...the same ways, and I am worried I'm about to go down a path in design that is irreversible if I don't understand this better. Also, I am using .NET.
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What is the idiomatic Go equivalent of C's ternary operator?
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As pointed out (and hopefully unsurprisingly), using if+else is indeed the idiomatic way to do conditionals in Go.
In addition to the full blown var+if+else block of code, though, this spelling is also used often:
index := val
if val <= 0 {
index = -val...
What is the correct answer for cout
...std::operator<<(std::cout, a++) or after. So the result of the above is undefined.
C++17 update
In C++17 the rules have been updated. In particular:
In a shift operator expression E1<<E2 and E1>>E2, every value computation and side-effect of E1 is sequenced before every val...
Round to at most 2 decimal places (only if necessary)
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edited Jan 23 at 17:04
Mike
50955 silver badges171...
“std::endl” vs “\n”
Many C++ books contain example code like this...
12 Answers
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Use email address as primary key?
Is email address a bad candidate for primary when compared to auto incrementing numbers?
25 Answers
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Disable hover effects on mobile browsers
...e that's meant to be used from both desktops and tablets. When it's being visited from a desktop, I want the clickable areas of the screen to light up with :hover effects (different background color, etc.) With a tablet, there's no mouse, so I don't want any hover effects.
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How to determine if a point is in a 2D triangle? [closed]
Is there an easy way to determine if a point is inside a triangle? It's 2D, not 3D.
25 Answers
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When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
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static_cast is the first cast you should attempt to use. It does things like implicit conversions between types (such as int to float, or pointer to void*), and it can also call explicit conversion functions (or implicit ones). In many c...