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Can two applications listen to the same port?
Can two applications on the same machine bind to the same port and IP address? Taking it a step further, can one app listen to requests coming from a certain IP and the other to another remote IP?
I know I can have one application that starts off two threads (or forks) to have similar behavior, but...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
Some SQL servers have a feature where INSERT is skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
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Mixin vs inheritance
What is the difference between a mixin and inheritance?
8 Answers
8
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Value of i for (i == -i && i != 0) to return true in Java
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The only int value for which it works is Integer.MIN_VALUE.
It's because integers are negated using the two's complement way.
Using
System.out.println(Integer.toBinaryString(Integer.MIN_VALUE));
you see that Integer.MIN_VALUE is
10000000000000000000000000000000
Taki...
How to check if a user is logged in (how to properly use user.is_authenticated)?
I am looking over this website but just can't seem to figure out how to do this as it's not working. I need to check if the current site user is logged in (authenticated), and am trying:
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Using PowerShell credentials without being prompted for a password
I'd like to restart a remote computer that belongs to a domain. I have an administrator account but I don't know how to use it from powershell.
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JRE 1.7 - java version - returns: java/lang/NoClassDefFoundError: java/lang/Object
When running any java application, or just 'java', the jvm fails:
27 Answers
27
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What is the best Java email address validation method? [closed]
What are the good email address validation libraries for Java? Are there any alternatives to commons validator ?
19 Answe...
git:// protocol blocked by company, how can I get around that?
Attempting something like git clone git://github.com/ry/node.git will not work, it results in:
7 Answers
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What is your most productive shortcut with Vim?
I've heard a lot about Vim , both pros and cons.
It really seems you should be (as a developer) faster with Vim than with any other editor.
I'm using Vim to do some basic stuff and I'm at best 10 times less productive with Vim.
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