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Why are Oracle table/column/index names limited to 30 characters?
...ine of code that goes something like
l_table_name VARCHAR2(30);
BEGIN
SELECT table_name
INTO l_table_name
FROM dba_tables
WHERE ...
to suddenly break because the DBA 15 years ago used VARCHAR2(30) rather than DBA_TABLES.TABLE_NAME%TYPE in the script would cause massive revolt. I w...
How to send a simple string between two programs using pipes?
...lt;sys/types.h>
#include <unistd.h>
int main()
{
int fd;
char * myfifo = "/tmp/myfifo";
/* create the FIFO (named pipe) */
mkfifo(myfifo, 0666);
/* write "Hi" to the FIFO */
fd = open(myfifo, O_WRONLY);
write(fd, "Hi", sizeof("Hi"));
close(fd);
/* rem...
How to parse the AndroidManifest.xml file inside an .apk package
...// StringTable, each string is represented with a 16 bit little endian
// character count, followed by that number of 16 bit (LE) (Unicode) chars.
int stOff = sitOff + numbStrings*4; // StringTable follows StrIndexTable
// XMLTags, The XML tag tree starts after some unknown content after the
// S...
Why is argc not a constant?
...at any C function can do. Also, getopt is declared as int getopt(int argc, char * const argv[], const char *optstring);. And here the const is not top level, but declares the pointers to be const, a promise to not modify them (although the strings that they point to might conceivably be modified).
...
What differences, if any, between C++03 and C++11 can be detected at run-time?
...zeof(b);
}
Also, the fact that string literals do not anymore convert to char*
bool isCpp0xImpl(...) { return true; }
bool isCpp0xImpl(char*) { return false; }
bool isCpp0x() { return isCpp0xImpl(""); }
I don't know how likely you are to have this working on a real implementation though. One t...
INT 10H 中断介绍 - C/C++ - 清泛网 - 专注C/C++及内核技术
...始行列
BH = 页号
AL = 0，BL = 属性
串：Char，char，……，char
AL = 1，BL = 属性
串：Char，char，……，char
AL = 2
串：Char，attr，……，char，attr
AL = 3
串：Char，attr，……，char...
Best way to repeat a character in C#
...turns
"aa"
from...
Is there a built-in function to repeat string or char in .net?
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What is the difference between printf() and puts() in C?
...e (except for the added newline) if the string doesn't contain any control characters (%) but if you cannot rely on that (if mystr is a variable instead of a literal) you should not use it.
So, it's generally dangerous -and conceptually wrong- to pass a dynamic string as single argument of printf...
Does the C++ standard mandate poor performance for iostreams, or am I just dealing with a poor imple
...ith GCC gives the following breakdown:
44.23% in std::basic_streambuf<char>::xsputn(char const*, int)
34.62% in std::ostream::write(char const*, int)
12.50% in main
6.73% in std::ostream::sentry::sentry(std::ostream&)
0.96% in std::string::_M_replace_safe(unsigned int, unsigned int, char...
mfc110d.dll!ATL::CSimpleStringT::~CSimpleStringT() 行 291 - 更多技术 -...
...ATL::CStringData::Release() 行 118 C++
mfc110d.dll!ATL::CSimpleStringT<char,1>::~CSimpleStringT<char,1>() 行 291 C++
mfc110d.dll!ATL::CStringT<char,StrTraitMFC_DLL<char,ATL::ChTraitsCRT<char> > >::~CStringT<char,StrTraitMFC_DLL<char,ATL::ChTraitsCRT<char> > >() 行 1241 C++
...
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