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Parallelize Bash script with maximum number of processes
...to max-procs processes at a time; the default is 1.
If max-procs is 0, xargs will run as many processes as possible at a
time. Use the -n option with -P; otherwise chances are that only one
exec will be done.
...
Where can I learn how to write C code to speed up slow R functions? [closed]
...ple example is this blog post where I show that instead of worrying about 10% differences (in one of the Radford Neal examples) we can get eightyfold increases with C++ (on what is of course a contrived example).
Edit 3: There is complexity in that you may run into C++ errors that are, to put it mi...
How do I add options to a DropDownList using jQuery?
... |
edited Jan 18 '14 at 8:09
Vikas
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answere...
Add a CSS border on hover without moving the element [duplicate]
...
.jobs .item:hover {
background: #e1e1e1;
border-top: 1px solid #d0d0d0;
}
If your elements have a specified height and/or width, you can also use box-sizing:border-box;, as this box model includes padding and border widths into the computed size, example:
.jobs .item {
background: #...
Convert two lists into a dictionary
...
answered Oct 16 '08 at 19:09
Dan LenskiDan Lenski
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...
Sending images using Http Post
...the HttpComponents libraries. Download the latest HttpClient (currently 4.0.1) binary with dependencies package and copy apache-mime4j-0.6.jar and httpmime-4.0.1.jar to your project and add them to your Java build path.
You will need to add the following imports to your class.
import org.apache.h...
Check if directory mounted with bash
...for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
fi
In my example, the if-statement is checking the exit code of grep, which indicates if there was a match. Since I don't want the output to be displayed when there...
How to drop all tables in a SQL Server database?
...ng you try (delete all tables from your database):
DECLARE @Sql NVARCHAR(500) DECLARE @Cursor CURSOR
SET @Cursor = CURSOR FAST_FORWARD FOR
SELECT DISTINCT sql = 'ALTER TABLE [' + tc2.TABLE_SCHEMA + '].[' + tc2.TABLE_NAME + '] DROP [' + rc1.CONSTRAINT_NAME + '];'
FROM INFORMATION_SCHEMA.REFERENTIA...
图表组件 · App Inventor 2 中文网
...：导入到数据文件的测试用 test.csv 如下：
time,data
1201,6
1202,6.2
1203,6.1
1204,6.5
1205,6.4
从上面数据文件加载数据：
以上数据折线图显示效果如下：
从列表导入(list)
将指定列表参数中的数据导入到数据序...
How to select/get drop down option in Selenium 2
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edited Sep 7 '16 at 15:09
matt freake
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answere...