大约有 42,000 项符合查询结果（耗时：0.0487秒） [XML]
Why is the use of alloca() not considered good practice?
...of the program's execution.
In the header file:
void DoSomething() {
wchar_t* pStr = alloca(100);
//......
}
In the implementation file:
void Process() {
for (i = 0; i < 1000000; i++) {
DoSomething();
}
}
So what happened was the compiler inlined DoSomething function and a...
What is RSS and VSZ in Linux memory management
...-in-c/7212248#7212248 */
void ProcStat_init(ProcStatm *result) {
const char* statm_path = "/proc/self/statm";
FILE *f = fopen(statm_path, "r");
if(!f) {
perror(statm_path);
abort();
}
if(7 != fscanf(
f,
"%lu %lu %lu %lu %lu %lu %lu",
&(...
What is the maximum characters for the NVARCHAR(MAX)?
I have declared a column of type NVARCHAR(MAX) in SQL Server 2008, what would be its exact maximum characters having the MAX as the length?
...
How to delete last character from a string using jQuery?
...end the
// extraction. If omitted,
// slice() selects all
// characters from the begin
// position to the end of
// the string.
var str = '123-4';
alert(str.slice(0, -1));
...
Is multiplication and division using shift operators in C actually faster?
... back, I benchmarked two
versions of my hashing algorithm:
unsigned
hash( char const* s )
{
unsigned h = 0;
while ( *s != '\0' ) {
h = 127 * h + (unsigned char)*s;
++ s;
}
return h;
}
and
unsigned
hash( char const* s )
{
unsigned h = 0;
while ( *s != '\0' ...
How can I add reflection to a C++ application?
...ld itself). This macro will be called like this:
REFLECTABLE
(
(const char *) name,
(int) age
)
So using Boost.PP we iterate over each argument and generate the data like this:
// A helper metafunction for adding const to a type
template<class M, class T>
struct make_const
{
ty...
Parse (split) a string in C++ using string delimiter (standard C++)
...ollowing, you need add 2 not 1 due to the size of the delimiter which is 2 characters :) : std::string s = "scott>=tiger>=mushroom"; std::string delimiter = ">="; size_t last = 0; size_t next = 0; while ((next = s.find(delimiter, last)) != std::string::npos) { st...
Why is MySQL's default collation latin1_swedish_ci?
... He is Finnish , but Finnish and Swedish share almost the same special characters ,so they share the same case insensitive collation
– kommradHomer
Feb 26 '14 at 10:47
5
...
What is the difference between CHARACTER VARYING and VARCHAR in PostgreSQL?
John uses CHARACTER VARYING in the places where I use VARCHAR .
I am a beginner, while he is an expert.
This suggests me that there is something which I do not know.
...
How to prevent SIGPIPEs (or handle them properly)
...? Is there a way to check if the other side of the line is still reading? (select() doesn't seem to work here as it always says the socket is writable). Or should I just catch the SIGPIPE with a handler and ignore it?
...