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What is the purpose of the “final” keyword in C++11 for functions?
... key disadvantage of vtables is that for any such virtual object (assuming 64-bits on a typical Intel CPU) the pointer alone eats up 25% (8 of 64 bytes) of a cache line. In the kind of applications I enjoy to write, this hurts very badly. (And from my experience it is the #1 argument against C++ fro...
How to repair a serialized string which has been corrupted by an incorrect byte count length?
...
}
}
}
A better way to save to Database
$toDatabse = base64_encode(serialize($data)); // Save to database
$fromDatabase = unserialize(base64_decode($data)); //Getting Save Format
share
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Vagrant stuck connection timeout retrying
...or: VT-x/AMD-V hardware acceleration is not available on your system. Your 64-bit quest will fail to detect a 64-bit CPU and will not be able to boot
– SKuijers
Jan 9 '15 at 11:34
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How do I determine the size of my array in C?
... %d\n", (int)( sizeof(intArray) / sizeof(intArray[0]) ));
}
Output (in a 64-bit Linux OS):
sizeof of array: 28
sizeof of parameter: 8
Length of array: 7
Length of parameter: 2
Output (in a 32-bit windows OS):
sizeof of array: 28
sizeof of parameter: 4
Length of array: 7
Length of parameter: 1
...
Where are static variables stored in C and C++?
...touched that, consider reading this post first.
Let's analyze a Linux x86-64 ELF example to see it ourselves:
#include <stdio.h>
int f() {
static int i = 1;
i++;
return i;
}
int main() {
printf("%d\n", f());
printf("%d\n", f());
return 0;
}
Compile with:
gcc -ggd...
(413) Request Entity Too Large | uploadReadAheadSize
...'ve written a WCF service with .NET 4.0, which is hosted on my Windows 7 x64 Ultimate system with IIS 7.5.
One of the service methods has an 'object' as argument and I'm trying to send a byte[] which contains a picture.
As long as the file size of this picture is less then approx. 48KB, all goes w...
How do you split a list into evenly sized chunks?
...
64 Answers
64
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What is an SSTable?
...nally, each SSTable contains a sequence of blocks (typically each block is 64KB in size, but this is configurable). A block index (stored at the end of the SSTable) is used to locate blocks; the index is loaded into memory when the SSTable is opened. A lookup can be performed with a single disk seek...
各编程语言读写文件汇总 - C/C++ - 清泛网 - 专注C/C++及内核技术
...se
{
printf("文件已经打开。");
}
/*读文件*/
char ch[64] = {0};
printf("文件内容：\n");
while(!feof(fp)) //判定文件是否结尾
{
if(fgets(ch, 64, fp) != NULL)
printf("%s", ch);
}
/*写文件：写完一定要关闭文件*/
fputs("write test", fp);...
Tab space instead of multiple non-breaking spaces (“nbsp”)?
...nt font. &emsp; is slightly bigger. I can see the difference in Chrome 64 and FireFox 58.
– Dmitry
Mar 7 '18 at 14:00
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