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How does Activity.finish() work in Android?
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Every life cycle event like onCreate, onResume, onPause.... onDestroy of an Activity is always called on a single thread - The "Main thread".
In short this thread is backed by a Queue into which all the activity events are getting ...
Exact time measurement for performance testing [duplicate]
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If you need to know the resolution of the Stopwatch timings on a particular machine then you can use the Stopwatch.Frequency property.
– LukeH
Jun 9 '09 at 11:03
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How to initialize an array in Java?
...ns you are assigning an array to data[10] which can hold just an element.
If you want to initialize an array, try using Array Initializer:
int[] data = {10,20,30,40,50,60,71,80,90,91};
// or
int[] data;
data = new int[] {10,20,30,40,50,60,71,80,90,91};
Notice the difference between the two dec...
How to replace a whole line with sed?
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Like this:
sed 's/aaa=.*/aaa=xxx/'
If you want to guarantee that the aaa= is at the start of the line, make it:
sed 's/^aaa=.*/aaa=xxx/'
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LINQ to SQL - Left Outer Join with multiple join conditions
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You need to introduce your join condition before calling DefaultIfEmpty(). I would just use extension method syntax:
from p in context.Periods
join f in context.Facts on p.id equals f.periodid into fg
from fgi in fg.Where(f => f.otherid == 17).DefaultIfEmpty()
where p.companyid == 100...
Heavy usage of Python at Google [closed]
...ome specialized languages such as sawzall are also in the mix for very specific tasks, and of course Javascript is very important for browser-side work.
Other languages, including the ones that Greg mentioned back in '06, are either "kind of accidental" or used for other specific tasks (e.g., Objec...
How to put the legend out of the plot
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You can make the legend text smaller by specifying set_size of FontProperties.
Resources:
Legend guide
matplotlib.legend
matplotlib.pyplot.legend
matplotlib.font_manager
set_size(self, size)
Valid font size are xx-small, x-small, small, medium, large, x-large, xx-lar...
Why I am Getting Error 'Channel is unrecoverably broken and will be disposed!'
... short: The main thread can have many UI threads to do multiple works, but if one sub-thread containing a UI thread is inside it, The UI thread may not have finished its work yet while it's parent thread has already finished its work, this causes memory leaks.
For example...for Fragment & UI ap...
How to install psycopg2 with “pip” on Python?
...r for e.g. Python 3.8.
Python 21
sudo apt install libpq-dev python-dev
If that's not enough, try
sudo apt install build-essential
or
sudo apt install postgresql-server-dev-all
as well before installing psycopg2 again.
CentOS 6
See Banjer's answer
1 Really? It's 2020
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Using python “with” statement with try-except block
...any exception as early as possible. This is not the purpose of exceptions. If the IO function that can fail is part of a more complicated operation, in most cases the IOError should abort the whole operation and so be handled at an outer level. Using with statements, you can get rid of all these try...