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Do I need to create indexes on foreign keys on Oracle?
...ance of an index may be unacceptable.
Most salient here would seem to be selectivity: if the values in the index would be highly duplicated then it may give better performance to drop the index (if possible) and allow a table scan.
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How to write an XPath query to match two attributes?
...
//div[@id='..' and @class='...]
should do the trick. That's selecting the div operators that have both attributes of the required value.
It's worth using one of the online XPath testbeds to try stuff out.
sha...
Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms
...rom firefox (You can do this (On Mac) in preferences - Advanced - Update - Select "Check for updates, but let me choose whether to install them")
If your scripts are running on a automated mode then you may want to disable updates. However this may create other issues. Since most people/user may hav...
Is there a way to get version from package.json in nodejs code?
...age.json will be in the client. I used webpack's definePlugin to pass only selected info from node environment to browser.
– doeke
Oct 13 '17 at 9:58
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Android: Share plain text using intent (to all messaging apps)
...e of the chooser that the system will show
* to allow the user to select an app
*/
.setChooserTitle(yourChooserTitle)
.startChooser();
If you have any more questions about using ShareCompat, I highly recommend this great article from Ian Lake, an Android Developer...
How to version control a record in a database
...tDate of the second record.
When you want to view the current record, you select the one where endDate is null.
This is sometimes called a type 2 Slowly Changing Dimension.
See also TupleVersioning
share
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Need a good hex editor for Linux [closed]
...A data conversion table.
Advanced copy/paste capabilities.
Highlighting of selection pattern matches in the file.
Plugin based architecture.
Export of data to text and html (others with plugins).
Bitwise operations on data.
A comprehensive user manual.
wxHexEditor is another Free Hex Editor, built...
Determine if variable is defined in Python [duplicate]
...ot much information in the question, so I believe only person asked it can select the best way to handle his case.
– Denis Otkidach
Oct 20 '09 at 7:58
140
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Redirect Windows cmd stdout and stderr to a single file
...direct STDERR you have to specify '2>' for the redirection symbol. This selects the second output stream which is STDERR.
Example
The command dir file.xxx (where file.xxx does not exist) will display the following output:
Volume in drive F is Candy Cane Volume Serial Number is 34EC-087...
Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...默认配置
这里会要求选择默认语言，我选的中文zh：
Select language: bg, ca, cs, da, de, en, es, fi, fr, he, hu, it, ja, ko, lt, nl, no, pl, pt, pt-br, ro, ru, sk, sr, sv, th, tr, uk, vn, zh, zh-tw [en] zh
这个默认设置只是在未登录时的界面语言，当用户登...