大约有 20,000 项符合查询结果（耗时：0.0208秒） [XML]
What is the best way to compute trending topics or tags?
... Addition
Normal z-scores as discussed above do not take into account the order of the data and hence the z-score for an observation of '1' or '9' would have the same magnitude against the sequence [1, 1, 1, 1, 9, 9, 9, 9]. Obviously for trend finding, the most current data should have more weight ...
A better similarity ranking algorithm for variable length strings
...h level of similarity between the strings.
A robustness to changes of word order - two strings which contain the same words, but in a different order, should be recognised as being similar. On the other hand, if one string is just a random anagram of the characters contained in the other, then it sh...
What is cURL in PHP?
...bout it (and most other extensions) can be found in the PHP manual.
In order to use PHP's cURL functions
you need to install the » libcurl
package. PHP requires that you use
libcurl 7.0.2-beta or higher. In PHP
4.2.3, you will need libcurl version 7.9.0 or higher. From PHP 4.3.0, you wi...
Get Image Height and Width as integer values?
...
Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
...
How can I sort arrays and data in PHP?
...az'];
}
}
For those familiar, this is equivalent to an SQL query with ORDER BY foo, baz.
Also see this very neat shorthand version and how to create such a comparison function dynamically for an arbitrary number of keys.
Sorting into a manual, static order
If you want to sort elements into a "m...
Are PHP include paths relative to the file or the calling code?
I'm having trouble understanding the ruleset regarding PHP relative include paths. If I run file A.PHP- and file A.PHP includes file B.PHP which includes file C.PHP, should the relative path to C.PHP be in relation to the location of B.PHP, or to the location of A.PHP? That is, does it matter whic...
How to prevent Browser cache for php site
...0', FALSE);
header('Pragma: no-cache');
AND Option 2 IS ALWAYS BETTER in order to avoid proxy based caching issue.
share
|
improve this answer
|
follow
|
...
Splitting string into multiple rows in Oracle
...th (regexp_replace(t.error, '[^,]+')) + 1) as sys.OdciNumberList)) levels
order by name
EDIT:
Here is a simple (as in, "not in depth") explanation of the query.
length (regexp_replace(t.error, '[^,]+')) + 1 uses regexp_replace to erase anything that is not the delimiter (comma in this case) an...
App Inventor 2 中文网 · 升级日志
...验。 优化 优化部分功能；解决“翻译器”崩溃问题；部分文档翻译；菜单优化等。 230710 2023/07/10 全新 “密码修改”功能全新上线！如遗忘初始密码，请联系客服重置。 优化 优化部分功能...
Ora-00257 错误处理一列 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...$ echo $ORACLE_SID
空的
查看环境变量
vi .bash_profile 没有问题
查看权限
ll .bash_profile
-rw--rw--- 1 oracle oinstall 529 10鏈?24 20:18 /home/oracle/.bash_profile
有问题。修改权限
chmod 775 /home/oracle/.bash_profile
进入ORLACE
sqlplus /as sysd...