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What is a database transaction?
...ible) explanation of a transaction as applied to computing (even if copied from Wikipedia)?
11 Answers
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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...he maximum memory. If you run with -Xms1024m -Xmx1024m, the value you get from totalMemory() and maxMemory() will be equal.
Also, if you want to accurately calculate the amount of used memory, you do so with the following calculation :
final long usedMem = totalMemory() - freeMemory();
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Cross-Origin Request Headers(CORS) with PHP headers
...e CORS-compliant method. It will allow any GET, POST, or OPTIONS requests from any
* origin.
*
* In a production environment, you probably want to be more restrictive, but this gives you
* the general idea of what is involved. For the nitty-gritty low-down, read:
*
* - https://developer....
What is the best way to call a script from another script?
...tc. I have another script which runs as a service. I want to call test1.py from the script running as a service.
13 Answers...
RabbitMQ and relationship between channel and connection
...epts are not tied together.
Each Consumer runs in its own thread allocated from the consumer thread pool. If multiple Consumers are subscribed to the same Queue, the broker uses round-robin to distribute the messages between them equally. See Tutorial two: "Work Queues".
It is also possible to att...
Custom events in jQuery?
... custom eventhandling in jquery the best way. I know how to hook up events from the dom elements like 'click' etc, but I'm building a tiny javascript library/plugin to handle some preview functionality.
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Android: Clear Activity Stack
...licated. When I click the Logout application navigates to login Screen and from there user can exit by cancel button (calling system.exit(0) )
...
How does a debugger work?
...ill enter an event loop much like for any UI, but instead of events coming from the windowing system, the OS will generate events based on what happens in the process being debugged – for example an exception occurring. See WaitForDebugEvent.
The debugger is able to read and write the target proc...
How do you run a crontab in Cygwin on Windows?
...ndows Scheduler, but others don't have an .exe extension so can't be run from DOS (it seems like).
8 Answers
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Converting stream of int's to char's in java
...se InputStreamReader with the appropriate Charset instead.
Simply casting from int to char only works if you want ISO-8859-1, if you're reading bytes from a stream directly.
EDIT: If you are already using a Reader, then casting the return value of read() to char is the right way to go (after check...