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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
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365
DateTime.strptime can handle seconds since epoch. The number must be converted to a string:
r...
Unicode Processing in C++
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answered Sep 11 '08 at 1:37
hazzenhazzen
15.7k55 gold badges3939 silver badges3333 bronze badges
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Checking if a string can be converted to float in Python
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316
I would just use..
try:
float(element)
except ValueError:
print "Not a float"
..it'...
Detecting endianness programmatically in a C++ program
... what unions are for !
bool is_big_endian(void)
{
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return bint.c[0] == 1;
}
The principle is equivalent to the type case as suggested by others, but this is clearer - and according to C99, is guaranteed to be corre...
How do I best silence a warning about unused variables?
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331
You can put it in "(void)var;" expression (does nothing) so that a compiler sees it is used. T...
Why would one use nested classes in C++?
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230
Nested classes are cool for hiding implementation details.
List:
class List
{
public:
...
How to check Oracle database for long running queries
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135
This one shows SQL that is currently "ACTIVE":-
select S.USERNAME, s.sid, s.osuser, t.sql_id, ...
phpcms与ucenter整合常见问题与解答 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...带的 UCenter 客户端版本为 1.5.1 Release 20100501 ，而 Discuz! X3.0 使用的版本为 1.6.0 。版本不一致，无法整合成功。
3、整合成功后，能达到怎样的效果？
答：实现 phpcms 与 Discuz! 会员的双向同步注册、登录、退出等。
4、第一次在 p...
Are Swift variables atomic?
... proposal https://github.com/apple/swift-evolution/blob/master/proposals/0030-property-behavior-decls.md - it looks like it is going to be possible to have @atomic behavior implemented by yourself.
share
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Is it better to use std::memcpy() or std::copy() in terms to performance?
...ion. In my test, I hash 5 strings using all four SHA-2 versions (224, 256, 384, 512), and I loop 300 times. I measure times using Boost.timer. That 300 loop counter is enough to completely stabilize my results. I ran the test 5 times each, alternating between the memcpy version and the std::copy ver...