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How to make git mark a deleted and a new file as a file move?
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Hank GayHank Gay
64.1k2929 gold badges144144 silver badges216216 bronze badges
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Concurrent HashSet in .NET Framework?
...eference (the reference needs 4 bytes in a 32-bit runtime and 8 bytes in a 64-bit runtime). Therefore, using a byte, an empty struct, or similar may reduce the memory footprint (or it may not if the runtime aligns the data on native memory boundaries for faster access).
– Lucer...
Given final block not properly padded
... a password, this will get even faster.
Also, DES has a block size of only 64 bits, which adds some more weaknesses in chaining modes.
Use a modern algorithm like AES instead, which has a block size of 128 bits, and a key size of
128 bits (for the standard variant).
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PHP best way to MD5 multi-dimensional array?
...62708 sec json_encode is (79.8%) faster with a difference of (-0.070362091064453 seconds) (the precent calculation is obviously incorrect). My array is up to 2 levels deep, so just keep in mind that (as usual) your milage may vary.
– samitny
Nov 8 '12 at 15:26
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Explain Python entry points?
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Brandon RhodesBrandon Rhodes
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How does a language expand itself? [closed]
... view, a syscall is an elementary machine instruction like SYSENTER on x86-64 with some conventions (ABI)
On my Linux desktop, the Qt libraries are above X11 client libraries communicating with the X11 server Xorg thru X Windows protocols.
On Linux, use ldd on your executable to see the (long) lis...
When is it appropriate to use UDP instead of TCP? [closed]
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64
If a TCP packet is lost, it will be resent. That is not handy for applications that rely on dat...
Is it safe to remove selected keys from map within a range loop?
...te, n)
for i := range b {
b[i] = letterBytes[rand.Int63() % int64(len(letterBytes))]
}
return string(b)
}
Looks like GC do frees the memory. So it's okay.
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What are the differences between Clojure, Scheme/Racket and Common Lisp?
... is the fastest Lisp according to http://benchmarksgame.alioth.debian.org/u64q/which-programs-are-fastest.html although there isn't much in it.....)
Clojure distinctive features:
Largest library ecosystem, since you can directly use any Java libraries
Vectors [] and maps {} used as standard in a...
How do pointer to pointers work in C?
...p are the addresses):
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
| | 58 | | | 63 | | 55 | | | h | e | l | l | o | \0 | |
+----+----+----+----+----+----+--...