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How to enumerate an enum with String type?
...atingBitPattern: $0), T.self) }
case 8: cast = { unsafeBitCast(UInt64($0), T.self) }
default: fatalError("cannot be here")
}
var i = 0
return GeneratorOf {
let next = cast(i)
return next.hashValue == i++ ? next : nil
}
}
The underlying idea is:
Me...
Static linking vs dynamic linking
...n i386 CPU's, because they can't generate position independent code. On amd64, jumps can be relative to the program counter, so this is a huge improvement.
2) This is correct. With optimizations guided by profiling you can usually win about 10-15 percent performance. Now that CPU speed has reached ...
Algorithm to return all combinations of k elements from n
...
64
Lets say your array of letters looks like this: "ABCDEFGH". You have three indices (i, j, k) in...
Create list of single item repeated N times
...ols.repeat(0, 10)', 'import itertools', number = 1000000)
0.37095273281943264
>>> timeit.timeit('[0] * 10', 'import itertools', number = 1000000)
0.5577236771712819
But wait - it's not a fair test...
>>> itertools.repeat(0, 10)
repeat(0, 10) # Not a list!!!
The function itert...
Interface vs Base class
...
64
Interfaces
Defines the contract between 2 modules. Cannot have any implementation.
Most lan...
Unicode character for “X” cancel / close?
...
64
× × or × (same thing) U+00D7 multiplication sign
× same character with a...
What is the meaning of polyfills in HTML5?
...
64
First off let's clarify what a polyfil is not: A polyfill is not part of the HTML5 Standard. N...
Purpose of Unions in C and C++
...eader files that do this exact thing. For example I've seen it in old (pre-64-bit) versions of <time.h> on both Windows and Unix. Dismissing it as "not valid" and "undefined" isn't really sufficient if I'm going to be called upon to understand code that works in this exact way.
...
Error - trustAnchors parameter must be non-empty
...4-17
OpenJDK Runtime Environment (build 10.0.1+10-Ubuntu-3ubuntu1)
OpenJDK 64-Bit Server VM (build 10.0.1+10-Ubuntu-3ubuntu1, mixed mode)
There are alternative workarounds as well, but those have their own side effects which will require extra future maintenance, for no payoff whatsoever.
The n...
What is a reasonable order of Java modifiers (abstract, final, public, static, etc.)?
... : private
4 : protected
8 : static
16 : final
32 : synchronized
64 : volatile
128 : transient
256 : native
512 : interface
1024 : abstract
2048 : strictfp
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