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How to delete duplicate lines in a file without sorting it in Unix?
...
From http://sed.sourceforge.net/sed1line.txt:
(Please don't ask me how this works ;-) )
# delete duplicate, consecutive lines from a file (emulates "uniq").
# First line in a set of duplicate lines is kept, rest are deleted.
sed '$!N; /^\(.*\)\n\1$/...
Border around specific rows in a table?
...l of the solutions presented here and I've done more searching on the internet for other possible solutions, and I think I've found one that's promising:
tr.top td {
border-top: thin solid black;
}
tr.bottom td {
border-bottom: thin solid black;
}
tr.row td:first-child {
border...
How to load JAR files dynamically at Runtime?
...ct.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
/**
* Useful class for dynamically changing the classpath, adding classes during runtime.
*/
public class ClasspathHacker {
/**
* Parameters of the method to add an URL to...
What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
...t the time of this answer) for example:
<link ... href="http://sstatic.net/stackoverflow/all.css?v=c298c7f8233d">
I think instead of a revision number the SO team went with a file hash, which is an even better approach, even with a new release, the browsers only forced to grab a new version...
How to get IP address of the device from code?
....xml permissions
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
// test functions
Utils.getMACAddress("wlan0");
Utils.getMACAddress("eth0");
Utils.getIPAddress(true); // IPv4
Utils.getIPAddress(fa...
Split a collection into `n` parts with LINQ?
...nd indeed the List<> is much faster. I suspect this is some sort of .NET implementation detail, perhaps deserving of a separate StackOverflow question. I have modified my answer to use List<> as per your suggestion. Preallocating the list capacity guarantees that end-insertion is still O...
Detect whether there is an Internet connection available on Android [duplicate]
I need to detect whether the Android device is connected to the Internet.
6 Answers
6
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How do I read any request header in PHP
... put every header into the $_SERVER variable? The PHP documentation at php.net/manual/en/reserved.variables.server.php is evasive about what we can be sure will be in there.
– Mark Amery
Oct 17 '13 at 9:38
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How to construct a relative path in Java from two absolute paths (or URLs)?
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When using java.net.URI.relativize you should be aware of Java bug:
JDK-6226081 (URI should be able to relativize paths with partial roots)
At the moment, the relativize() method of URI will only relativize URIs when one is a prefix of ...
Add alternating row color to SQL Server Reporting services report
...parent")
This trick can be applied to many areas of the report.
And in .NET 3.5+ You could use:
= If(RowNumber(Nothing) Mod 2 = 0, "Silver", "Transparent")
Not looking for rep--I just researched this question myself and thought I'd share.
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