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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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Round to at most 2 decimal places (only if necessary)
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edited Jan 23 at 17:04
Mike
50955 silver badges171...
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...
mmap() vs. reading blocks
...on Linux and I came across a nice post (link) on the Linux kernel mailing list. It's from 2000, so there have been many improvements to IO and virtual memory in the kernel since then, but it nicely explains the reason why mmap or read might be faster or slower.
A call to mmap has more overhead th...
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.
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“std::endl” vs “\n”
Many C++ books contain example code like this...
12 Answers
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Use of Application.DoEvents()
...mous amount of backlash against it, but nobody ever really explains why it is "bad". The same kind of wisdom as "don't mutate a struct". Erm, why does the runtime and the language supports mutating a struct if that's so bad? Same reason: you shoot yourself in the foot if you don't do it right. E...
Why doesn't java.util.Set have get(int index)?
...rticularly those implementing the java.util.SortedSet interface), but that is not a general property of sets.
If you're trying to use sets this way, you should consider using a list instead.
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Do zombies exist … in .NET?
I was having a discussion with a teammate about locking in .NET. He's a really bright guy with an extensive background in both lower-level and higher-level programming, but his experience with lower level programming far exceeds mine. Anyway, He argued that .NET locking should be avoided on critic...
Plain Old CLR Object vs Data Transfer Object
... Don't let frameworks dictate your object's design.
A DTO's only purpose is to transfer state, and should have no behavior. See Martin Fowler's explanation of a DTO for an example of the use of this pattern.
Here's the difference: POCO describes an approach to programming (good old fashioned obj...