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oracle10g 网址收藏 - ORACLE - 清泛IT论坛，有思想、有深度
...果通过迅雷进行下载，就不用登陆OTN了：
Oracle Database 10g Release 2 (10.2.0.1.0) Enterprise/Standard Edition for Microsoft Windows (32-bit)
http://download.oracle.com/otn/nt/oracle10g/10201/10201_database_win32.zip
http://download.oracle.com/otn/nt/oracle10g/10201/10201_client_wi...
Alternatives to gprof [closed]
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answered Dec 19 '09 at 5:26
Norman RamseyNorman Ramsey
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The modulo operation on negative numbers in Python
...nually fix it up by adding 7:
int result = (2 - N) % 7;
return result < 0 ? result + 7 : result;
(See http://en.wikipedia.org/wiki/Modulo_operator for how the sign of result is determined for different languages.)
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What is more efficient? Using pow to square or just multiply it with itself?
... expression) \
double test##num(double b, long loops) \
{ \
double x = 0.0; \
\
boost::posix_time::ptime startTime = now(); \
for (long i=0; i<loops; ++i) \
{ \
x += expression; \
x += expression; \
x += expression; \
x += expression; \
x +=...
Why is this F# code so slow?
A Levenshtein implementation in C# and F#. The C# version is 10 times faster for two strings of about 1500 chars. C#: 69 ms, F# 867 ms. Why? As far as I can tell, they do the exact same thing? Doesn't matter if it is a Release or a Debug build.
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Build tree array from flat array in javascript
...on has :
id : a unique id,
parentId : the id of the parent node (which is 0 if the node is a root of the tree)
level : the level of depth in the tree
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.NET JIT potential error?
...o, and running the release outside Visual Studio. I'm using Visual Studio 2008 and targeting .NET 3.5. I've also tried .NET 3.5 SP1.
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Python: Using .format() on a Unicode-escaped string
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>>> s = u'\u2265'
>>> print s
≥
>>> print "{0}".format(s)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\u2265' in position 0: ordinal not in range(128)
>>> print...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...al terms they're not usually big ones.
There's a fourth way, and as of ES2015 (ES6) there's two more. I've added the fourth way at the end, but inserted the ES2015 ways after #1 (you'll see why), so we have:
var a = 0; // 1
let a = 0; // 1.1 (new with ES2015)
const a = 0; // 1.2 (new wit...
Running a cron job at 2:30 AM everyday
How to configure a cron job to run every night at 2:30? I know how to make it run at 2, but not 2:30.
6 Answers
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