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jQuery: Difference between position() and offset()
...tical. The offset parent is "the closest positioned containing element."
For example, with this document:
<div style="position: absolute; top: 200; left: 200;">
<div id="sub"></div>
</div>
Then the $('#sub').offset() will be {left: 200, top: 200}, but its .positio...
Simplest way to read json from a URL in java
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Using the Maven artifact org.json:json I got the following code, which I think is quite short. Not as short as possible, but still usable.
package so4308554;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
imp...
Can I change the viewport meta tag in mobile safari on the fly?
I have an AJAX app built for mobile Safari browser that needs to display different types of content.
3 Answers
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How to test which port MySQL is running on and whether it can be connected to?
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To find a listener on a port, do this:
netstat -tln
You should see a line that looks like this if mysql is indeed listening on that port.
tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN
Port 3306 is MySq...
Multiple commands on a single line in a Windows batch file
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Use:
echo %time% & dir & echo %time%
This is, from memory, equivalent to the semi-colon separator in bash and other UNIXy shells.
There's also && (or ||) which only executes the second command if the first succeeded (or failed), but the single ampersand & is what y...
What's the difference between a Python module and a Python package?
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A module is a single file (or files) that are imported under one import and used.
e.g.
import my_module
A package is a collection of modules in directories that give a package hierarchy.
from my_package.timing.danger.internets import function_of_l...
What does “@@ -1 +1 @@” mean in Git's diff output?
I've been collecting data from the information returned from
3 Answers
3
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How to remove all null elements from a ArrayList or String Array?
...singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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Parsing IPv6 extension headers containing unknown extensions
...e I want to parse IPv6 headers to match things like ICMPv6 types, TCP/UDP port numbers, etc.
4 Answers
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bash: shortest way to get n-th column of output
Let's say that during your workday you repeatedly encounter the following form of columnized output from some command in bash (in my case from executing svn st in my Rails working directory):
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