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What is the meaning of the term arena in relation to memory?
... manage memory manually by handing out parts of that memory. For example:
char * arena = malloc(HUGE_NUMBER);
unsigned int current = 0;
void * my_malloc(size_t n) { current += n; return arena + current - n; }
The point is that you get full control over how the memory allocation works. The only ...
Jump to editor shortcut in Intellij IDEA
...
With Alt + Home you can actually put focus on selecting the file and hit enter in order to go to the editor.
Esc is not always going to put the focus on editor.
For those on Mac (you don't have a Home key), use Command + E to open the recent files then hit enter.
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Explanation of JSONB introduced by PostgreSQL
...h a stable release, there will be two major use cases, when you can easily select between them:
If you only work with the JSON representation in your application, PostgreSQL is only used to store & retrieve this representation, you should use json.
If you do a lot of operations on the JSON val...
How to get the insert ID in JDBC?
...or Oracle, you can invoke a CallableStatement with a RETURNING clause or a SELECT CURRVAL(sequencename) (or whatever DB-specific syntax to do so) directly after the INSERT in the same transaction to obtain the last generated key. See also this answer.
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Android: “Path for project must have only one segment”
... me it was helpful to do the following:
Run -> Run Configurations -> Select Android Application
I don't know why, but there was something called New Application...delete it....after delete everything should work fine
s...
How do I specify different layouts for portrait and landscape orientations?
...mes depending on orientation and resolution, the device will automatically select the right one for its screen settings
More info here:
http://developer.android.com/guide/practices/screens_support.html
under "Resource directory qualifiers for screen size and density"
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SQL Server 2008: how do I grant privileges to a username?
...'
If you need to be more granular, you can use the GRANT command:
GRANT SELECT, INSERT, UPDATE ON dbo.YourTable TO YourUserName
GRANT SELECT, INSERT ON dbo.YourTable2 TO YourUserName
GRANT SELECT, DELETE ON dbo.YourTable3 TO YourUserName
and so forth - you can granularly give SELECT, INSERT, UP...
创建增量同步Oracle物化视图问题 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
..._tablename refresh fast on demand start with sysdate next sysdate+1/288 as select * from T_tablename@dblink_name;”。
现在，数据库A上此表的主键约束因主键字段值重复而被disable了，在第三个数据库C上新建这个物化视图却失败，说：“ORA-12014: 表 'T_MV_TE...
Apple Mach-O Linker Error when compiling for device
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In some case error log window displaying .xctest error, to fix it
-> Select your project
-> Beside this(just before General tab) select your projectTest file from dropdown
-> There is one option (like ProjNameTests)
-> In Host Application, select your project from dropdown only if ...
Handling colon in element ID with jQuery
.../ Timing
have a look at this jsbin which tests and compares the speed of selection methods of IDs with colons
you need to open your firebug console to get the results.
I tested it with firefox 10 and jquery 1.7.2
basically I did a select 10'000 times of a div with a colon in the id - with the d...