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What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...i in "foo bar"; do...'
echo $i # so only runs the loop once
done
# foo bar
Contrast that behavior with the following:
var="foo bar"
for i in $var; do # Expands to 'for i in foo bar; do...'
echo $i # so runs the loop twice, once for each argument
done
# foo
# bar
As wit...
Convert a bitmap into a byte array
...r();
return (byte[])converter.ConvertTo(img, typeof(byte[]));
}
This one is convenient because it doesn't require a lot of code.
Memory Stream
public static byte[] ImageToByte2(Image img)
{
using (var stream = new MemoryStream())
{
img.Save(stream, System.Drawing.Imaging.Imag...
How can I change my default database in SQL Server without using MS SQL Server Management Studio?
...u do not have permission.". even worse I'm in multiple groups because each one gives me specific access to one of the many DBs on the server. suggestions?
– matao
Feb 1 '19 at 2:58
...
Read entire file in Scala?
...hat it is horrible slow due to its implementation nature. For larger files one should use:
source.getLines mkString "\n"
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How to programmatically empty browser cache?
...n to set up the App Cache manifest. It does not describe a method by which one can clear the 'traditional' browser cache via client- or server-side code, which is nigh impossible to do.
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How to change the order of DataFrame columns?
...
One easy way would be to reassign the dataframe with a list of the columns, rearranged as needed.
This is what you have now:
In [6]: df
Out[6]:
0 1 2 3 4 mean
0 0.445598 0....
What goes into the “Controller” in “MVC”?
...ers are a perfect place to collect data ready to be consumed by your view. One should not have to dispatch the complete controller stack on to reuse some data-access logic. More detail: rmauger.co.uk/2009/03/…
– Exception e
Nov 24 '09 at 14:56
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How to set Sqlite3 to be case insensitive when string comparing?
...se '=' in the where clause, I found that sqlite3 is case sensitive. Can anyone tell me how to use string comparing case-insensitive?
...
How to recursively find and list the latest modified files in a directory with subdirectories and ti
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Try this one:
#!/bin/bash
find $1 -type f -exec stat --format '%Y :%y %n' "{}" \; | sort -nr | cut -d: -f2- | head
Execute it with the path to the directory where it should start scanning recursively (it supports filenames with spa...
Node.js create folder or use existing
...wered Dec 4 '12 at 5:58
Teemu IkonenTeemu Ikonen
10.7k44 gold badges1818 silver badges3333 bronze badges
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