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Running script upon login mac [closed]
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How can I add an empty directory to a Git repository?
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Get exit code of a background process
...ing. (ps | grep isn't idiot-proof. If you have time you can come up with a more robust way to tell whether the process is still running).
Here's a skeleton script:
# simulate a long process that will have an identifiable exit code
(sleep 15 ; /bin/false) &
my_pid=$!
while ps | grep " $my_pid ...
How to make a HTTP request using Ruby on Rails?
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Design Patterns: Factory vs Factory method vs Abstract Factory
...ional patterns:
Design start out using Factory Method (less complicated, more customizable, subclasses proliferate) and evolve toward Abstract Factory, Prototype, or Builder (more flexible, more complex) as the designer discovers where more flexibility is needed
Abstract Factory classes are ofte...
Lock, mutex, semaphore… what's the difference?
... number of cpu, io or ram intensive tasks running at the same time.
For a more detailed post about the differences between mutex and semaphore read here.
You also have read/write locks that allows either unlimited number of readers or 1 writer at any given time.
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What is the largest Safe UDP Packet Size on the Internet
...t said; having less fragments makes delivery "safer" because if there were more than one and any one of those never made it - the whole packet (datagram) is dropped by UDP.
– markmnl
Jan 5 '13 at 9:28
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What is the difference between the Facade and Adapter Pattern?
...he shades too. That's a Facade - one button/function that takes care of a more complicated set of steps.
The Adapter pattern just links two incompatible interfaces.
EDIT: A quick analogy for the Adapter pattern (based on the comments) might be something like a DVI-to-VGA adapter. Modern video ca...
What is the maximum value for an int32?
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Nesting await in Parallel.ForEach
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