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EC2 instance types's exact network performance?
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Bandwidth is tiered by instance size, here's a comprehensive answer:
For t2/m3/c3/c4/r3/i2/d2 instances:
t2.nano = ??? (Based on the scaling factors, I'd expect 20-30 MBit/s)
t2.micro = ~70 MBit/s (qiita says 63 MBit/s) - t1.micro gets about ~100 Mbit/s
t2.small = ~12...
How to get position of a certain element in strings vector, to use it as an index in ints vector?
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Sorry, I can't see @Bob__ 's comments, maybe deleted? I'm wondering why ptrdiff_t is better than size_t since ptrdiff_t would raise a warning of comparison between signed and unsigned integer
– Hiraku
Oct 17 '17 at...
Why use symbols as hash keys in Ruby?
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TL;DR:
Using symbols not only saves time when doing comparisons, but also saves memory, because they are only stored once.
Ruby Symbols are immutable (can't be changed), which makes looking something up much easier
Short(ish) answer:
Using symbols not only saves time when d...
What's the status of multicore programming in Haskell?
...n article in the Economist magazine, Jun 2nd 2011.
Parallel tree scans via composition, an article by Conal Elliott
Numeric Haskell, a tutorial on parallel array programming with Repa, released
Works has begun on extending GHC eventlog and Threadscope to support multi-process or distributed Haskell ...
Why is conversion from string constant to 'char*' valid in C but invalid in C++
...ved, so code that depends on it (like your first example) should no longer compile.
You've noted one way to allow the code to compile: although the implicit conversion has been removed, an explicit conversion still works, so you can add a cast. I would not, however, consider this "fixing" the code....
Is it safe to ignore the possibility of SHA collisions in practice?
...t will explode, and it depends on you, will you take that risk? If you are completely right, then we can take the risk, because it is 45 orders of magnitude more probable the civilization to be destroyed. Right?
– Hristo Hristov
Oct 25 '10 at 13:13
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C++ where to initialize static const
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Anywhere in one compilation unit (usually a .cpp file) would do:
foo.h
class foo {
static const string s; // Can never be initialized here.
static const char* cs; // Same with C strings.
static const int i = 3; // Integral typ...
Boolean vs tinyint(1) for boolean values in MySQL
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PostgreSQL naming conventions
... written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively when not quoted (it actually folds them to lowercase internally), and case sensitively when quoted; many people are not aware of this idiosyncrasy. Using always...
How do I write LINQ's .Skip(1000).Take(100) in pure SQL?
... See the link in my answer for a bit more detail. stackoverflow.com/questions/1744802/…
– Mike Atlas
Nov 16 '09 at 21:06
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