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What does OSGi solve?
...dles and communicate through well defined services. Hiding internals means more freedom to change later. This not only reduces the number of bugs, it also makes bundles simpler to develop because correctly sized bundles implement a piece of functionality through well defined interfaces. There is an ...
Is 'float a = 3.0;' a correct statement?
...value which is one tenth of someFloat, the expression someFloat * 0.1 will more accurate results than someFloat * 0.1f, while in many cases being cheaper than a floating-point division. For example, (float)(167772208.0f*0.1) will correctly round to 16777220 rather than 16777222. Some compilers may...
How can you profile a Python script?
... the interpreter, like this:
import cProfile
cProfile.run('foo()')
Even more usefully, you can invoke the cProfile when running a script:
python -m cProfile myscript.py
To make it even easier, I made a little batch file called 'profile.bat':
python -m cProfile %1
So all I have to do is run:...
“Bitmap too large to be uploaded into a texture”
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What is the purpose of std::make_pair vs the constructor of std::pair?
...o1;
MyLongClassName2 o2;
auto p = std::make_pair(o1, o2);
instead of the more verbose:
std::pair<MyLongClassName1,MyLongClassName2> p{o1, o2};
which repeats the types, and can be very long.
Type inference works in that pre-C++17 case because make_pair is not a constructor.
make_pair is ...
How is CountDownLatch used in Java Multithreading?
...'s not reusable: once count reaches zero you cannot use CountDownLatch any more.
Edit:
Use CountDownLatch when one thread (like the main thread) requires to wait for one or more threads to complete, before it can continue processing.
A classical example of using CountDownLatch in Java is a ser...
Using jQuery to test if an input has focus
... can cause false positives. See stackoverflow.com/questions/967096/… for more information (thanks to Ben Alman and Diego Perini).
– Mathias Bynens
Mar 22 '11 at 13:01
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How do I pronounce “=>” as used in lambda expressions in .Net
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How to initialize List object in Java?
...edList, Stack, Vector
Those can be instantiated. Use their links to know more about them, I.E: to know which fits better your needs.
The 3 most commonly used ones probably are:
List<String> supplierNames1 = new ArrayList<String>();
List<String> supplierNames2 = new LinkedList...
heroku - how to see all the logs
...il the logs live
heroku logs -t
Heroku log documentation
If you need more than a few thousand lines you can Use heroku's Syslog Drains
Alternatively (old method):
$ heroku run rails c
File.open('log/production.log', 'r').each_line { |line| puts line }
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