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How to concatenate string variables in Bash
...aces, tabulations and/or newlines
printf -v foo "%s World" "$foo"
Shell now
Under POSIX shell, you could not use bashisms, so there is no builtin printf.
Basically
But you could simply do:
foo="Hello"
foo="$foo World"
echo $foo
Hello World
Formatted, using forked printf
If you want to use ...
Removing Java 8 JDK from Mac
...f JDK 8 a while ago to look at some of the examples. I thought for sure by now, it's easy to change between versions.
12 A...
Will using 'var' affect performance?
...ate 8 Years Later
I need to update this as my understanding has changed. I now believe it may be possible for var to affect performance in the situation where a method returns an interface, but you would have used an exact type. For example, if you have this method:
IList<int> Foo()
{
retu...
Command copy exited with code 4 when building - Visual Studio restart solves it
Every now and then when I build my solution here (with 7 projects in it) I get the dreaded 'Command copy exited with code 4' error, in Visual Studio 2010 Premium ed.
...
What is the difference between a port and a socket?
...ress conditions.
The combination of an IP address and a port is strictly known as an endpoint and is sometimes called a socket. This usage originates with RFC793, the original TCP specification.
A TCP connection is defined by two endpoints aka sockets.
An endpoint (socket) is defined by the combi...
Why Doesn't C# Allow Static Methods to Implement an Interface?
... edited Jan 10 at 17:03
Dan Jagnow
73388 silver badges2121 bronze badges
answered Nov 3 '08 at 17:37
Mark Bra...
What is the difference between Nexus and Maven?
...e Maven repository format. While it supports many other repository formats now, the
Maven repository format is still the most common and well supported format for build and provisioning
tools running on the JVM and beyond.
This chapter shows example configurations for using the repository manager wi...
What is ApplicationException for in .NET?
...
The short answer is: nowhere.
It is a relic of the past, where Microsoft intended developers to inherit all their custom exceptions from ApplicationException. Shortly after, they changed their mind and advised that custom exceptions should deriv...
Differences between cookies and sessions?
...in web developement and am learning about JSP & Servlets . I have some knowledge of HttpSession - I have used it in some of my sample projects.
...
Create a new database with MySQL Workbench
...alled the latest version of the MySQL Workbench (5.2.33). I would like to know how you can create a database with this application. In the Overview tab of the SQL editor there are few "MySQL Schema" displayed, are these schemas the existing databases?
...