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Why can't C compilers rearrange struct members to eliminate alignment padding? [duplicate]
...it (for example: a foreign library, a file on disc, network data, CPU page tables, ...). In such a case the binary structure of data is also defined in a place inaccessible to the compiler, so reordering the struct fields would create a data type that is inconsistent with the other definitions. For ...
.net implementation of bcrypt
...BSD's Blowfish-based password
hashing code, described in "A
Future-Adaptable Password Scheme" by
Niels Provos and David Mazières. It is
a direct port of jBCrypt by Damien
Miller, and is thus released under the
same BSD-style license. The code is
fully managed and should work with any
...
What are POD types in C++?
...l be no "magic" going on in the structure: for example hidden pointers to vtables, offsets that get applied to the address when it is cast to other types (at least if the target's POD too), constructors, or destructors. Roughly speaking, a type is a POD when the only things in it are built-in types ...
Vagrant reverse port forwarding?
...ld labeled "Default Gateway" on Windows):
$ netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 10.0.2.2 0.0.0.0 UG 0 0 0 eth0
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 ...
Styling text input caret
...s property caret-color which applies to the caret of an input or contenteditable area. The support is growing but not 100%, and this only affects color, not width or other types of appearance.
input{
caret-color: rgb(0, 200, 0);
}
<input type="text"/>
...
What does the line “#!/bin/sh” mean in a UNIX shell script?
...
When you try to execute a program in unix (one with the executable bit set), the operating system will look at the first few bytes of the file. These form the so-called "magic number", which can be used to decide the format of the program and how to execute it.
#! corresponds to the ...
Tuples( or arrays ) as Dictionary keys in C#
I am trying to make a Dictionary lookup table in C#. I need to resolve a 3-tuple of values to one string. I tried using arrays as keys, but that did not work, and I don't know what else to do. At this point I am considering making a Dictionary of Dictionaries of Dictionaries, but that would proba...
Proper way to rename solution (and directories) in Visual Studio
... I had to hunt down why I was getting some type of duplicate error for the table classes. Once I removed those from the project, it worked fine. Hopefully this helps. And thanks, Edoardo!
– Steve
Dec 19 '17 at 16:29
...
What are the advantages of using a schema-free database like MongoDB compared to a relational databa
... often represent in a single entity a construct that would require several tables to properly represent in a relational db. This is especially useful if your data is immutable.
Deep query-ability. MongoDB supports dynamic queries on documents using a document-based query language that's nearly as po...
How do I create a random alpha-numeric string in C++?
... the trick, but I found it a bit too verbose for this simple task. Look-up tables can sometimes do wonders:
#include <iostream>
#include <ctime>
#include <unistd.h>
using namespace std;
string gen_random(const int len) {
string tmp_s;
static const char alphanum[] =
...