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Synchronization vs Lock
...ings where you can't acquire and release in such a clean manner. I would honestly prefer to avoid using bare Locks in the first place, and just go with a more sophisticated concurrency control such as a CyclicBarrier or a LinkedBlockingQueue, if they meet your needs.
I've never had a reason to use...
How to call function of one php file from another php file and pass parameters to it?
I want to call a function in one PHP file from a second PHP file and also pass two parameters to that function. How can I do this?
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Revert to Eclipse default settings
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This one did not work for me. Apparently, properties change Eclipse more than can be restored by defaults.
– mico
Feb 13 '12 at 9:41
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Permission denied (publickey) when deploying heroku code. fatal: The remote end hung up unexpectedly
...id_rsa.pub
If you don't have a public key, Heroku will prompt you to add one automatically which works seamlessly. Just use:
heroku keys:add
To clear all your previous keys do :
heroku keys:clear
To display all your existing keys do :
heroku keys
EDIT:
The above did not seem to work for...
Merge multiple lines (two blocks) in Vim
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del deletes the given lines. It can take a register argument, but when one is not given, it dumps the lines to the unnamed register, @", just like deleting in normal mode does. let l=split(@") then splits the deleted lines into a list, using the default delimiter: whitespace. To work properly ...
What is ActiveMQ used for - can we apply messaging concept using a Database?
...d for the purpose of sending messages between two applications, or two components inside one application.
Essentially, MOM and databases share a common foundation in that they provide transactional and persistent data storage to can read and write from.
The big difference is the usage pattern - whe...
Nodejs Event Loop
...ve until the script ends. CPU bound operation - execute in-line, I/O bound ones, request to the machinery as above.
When I/O completes, the listeners are called back.
The event machinery above is called libuv AKA event loop framework. Node leverages this library to implement its event driven progr...
Why do some websites add “Slugs” to the end of URLs? [closed]
Many websites, including this one, add what are apparently called slugs - descriptive but as far as I can tell useless bits of text - to the end of URLs.
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What is the difference between String and string in C#?
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I always use the aliases because I've assumed one day it might come in handy because they are acting as an abstraction, so therefore can have their implementations changed without me having to know.
– Rob
Oct 12 '12 at 23:25
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Regex expressions in Java, \\s vs. \\s+
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The first one matches a single whitespace, whereas the second one matches one or many whitespaces. They're the so-called regular expression quantifiers, and they perform matches like this (taken from the documentation):
Greedy quantif...