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Eclipse IDE: How to zoom in on text?
...pdate/) into the Works with: text box and press Enter. Expand the tree and select FontsFeature as in the following image:
Complete the installation and restart Eclipse, then you should see the A toolbar buttons (circled in red in the following image) and be able to use the keyboard shortcuts Ctrl...
How to comment a block in Eclipse?
...Ctrl+Shift+c
Uncomment: Ctrl+Shift+c
For Multiple Lines (Toggle Effect)
(Select the lines you want to comment)
comment : Ctrl+Shift+c
Uncomment: Ctrl+Shift+c
It is for all html , css , jsp , java .
It gives toggle effect.
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How do I ignore ampersands in a SQL script running from SQL Plus?
..., I've chose the # character, but that choice is just an example.
SQL> select '&var_ampersand #var_hash' from dual;
Enter value for var_ampersand: a value
'AVALUE#VAR_HASH'
-----------------
a value #var_hash
SQL> set define #
SQL> r
1* select '&var_ampersand #var_hash' from du...
BIO与NIO、AIO的区别(这个容易理解) - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...IO是否完成，那么为什么说是阻塞的呢？因为此时是通过select系统调用来完成的，而select函数本身的实现方式是阻塞的，而采用select函数有个好处就是它可以同时监听多个文件句柄，从而提高系统的并发性！
异步非阻塞IO:在此...
How to run SQL script in MySQL?
... If the purpose of writing to file is taking data dump, I guess SELECT ... INTO OUTFILE /path/to/file.csv is more efficient way. See options and syntax here - dev.mysql.com/doc/refman/5.7/en/select-into.html
– Anis
Feb 21 '18 at 6:43
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IF statement: how to leave cell blank if condition is false (“” does not work)
...ls in a column, I would recommend filtering on the column for blanks, then selecting the resulting cells and pressing Del. After which you can remove the filter.
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Express.js req.body undefined
... automatically add the 'Content-Type: application/json' header even if you select raw > json.
– Jordan
Sep 29 '13 at 8:20
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Reorder / reset auto increment primary key
...riable, this is okay: SET @a = @a + 1; For other statements, such as SELECT, you might get the results you expect, but this is not guaranteed. In the following statement, you might think that MySQL will evaluate @a first and then do an assignment second: SELECT @a, @a:=@a+1, ...; However...
How to get the list of all installed color schemes in Vim?
...a list of all installed color schemes in Vim? That would make very easy to select one without looking at the .vim directory.
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Showing which files have changed between two revisions
...n use gitk.
Run:
$ gitk --all
Right click on a commit of a branch and select Mark this commit in the pop-up menu.
Right click on a commit of another branch and select Diff this -> marked commit or Diff marked commit -> this.
Then there will be a changed files list in the right bottom ...