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Use grep to report back only line numbers
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All of these answers require grep to generate the entire matching lines, then pipe it to another program. If your lines are very long, it might be more efficient to use just sed to output the line numbers:
sed -n '/pattern/=...
Can existing virtualenv be upgraded gracefully?
...6 virtualenv to "revirtual" the existing directory. You will have to reinstall all the modules you installed though. I often have a virtual directory for developing a module, and virtualenv the same directory with many versions of Python, and it works just fine. :)
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ServiceStack vs ASP.Net Web API [closed]
...'s built around a simple and elegant core - with most of its features naturally binding to your models, not your controllers - which is what MVC, WebApi does (as well as every other Web Service Framework Microsoft has produced).
Adopting a message-based design offers a superior approach for remote ...
Why is list initialization (using curly braces) better than the alternatives?
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Basically copying and pasting from Bjarne Stroustrup's "The C++ Programming Language 4th Edition":
List initialization does not allow narrowing (§iso.8.5.4). That is:
An integer cannot be converted to another integer that cann...
select2 - hiding the search box
...edit makes the text and the code not match up. The issue linked to specifically points out that a negative value is the correct supported approach. The issue linked to also claims "High value of minimumResultsForSearch only hides searchbox in opened select. But if we type some letter while select is...
Regex exactly n OR m times
...character before) as you can see here: https://regex101.com/r/oC5oJ4/1
Finally, to match the one character distant match, you can add a positive look ahead (?=) on the "no 'x' after" or a positive look behind (?<=) on the "no 'x' before", like this: https://regex101.com/r/mC4uX3/1
(?<=[^x]|^...
Closing Hg Branches
... a central repo that is shared amongst developers, is there a way to eventually close the FeatureBranchName when its development has officially been merged with the default branch?
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When should I use File.separator and when File.pathSeparator?
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pathSeparatorChar: Same as pathSeparator but it’s char
Note that all of these are final variables and system dependent.
Here is the java program to print these separator variables.
FileSeparator.java
import java.io.File;
public class FileSeparator {
public static void main(String[]...
How to use Bash to create a folder if it doesn't already exist?
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There is actually no need to check whether it exists or not. Since you already wants to create it if it exists , just mkdir will do
mkdir -p /home/mlzboy/b2c2/shared/db
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What is Dispatcher Servlet in Spring?
...s to take an incoming URI and find the right combination of handlers (generally methods on Controller classes) and views (generally JSPs) that combine to form the page or resource that's supposed to be found at that location.
I might have
a file /WEB-INF/jsp/pages/Home.jsp
and a method on a class...