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How to drop a PostgreSQL database if there are active connections to it?
I need to write a script that will drop a PostgreSQL database. There may be a lot of connections to it, but the script should ignore that.
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Load resources from relative path using local html in uiwebview
I have a very simple iOS app with a uiwebview loading a very simple test page (test.html):
8 Answers
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How to securely save username/password (local)?
...ils consist of username and password, and they need to be saved locally.
It's just a matter of security, so other people using the same computer can't see everyone's personal data.
What is the best/most secure way to save this data?
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How to store int[] array in application Settings
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There is also another solution - requires a bit of manual editing of the settings file, but afterwards works fine in VS environment and in the code. And requires no additional functions or wrappers.
The thing is, that VS allows to serialize int[] type by default in the...
Allowed characters in filename [closed]
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You should start with the Wikipedia Filename page. It has a decent-sized table (Comparison of filename limitations), listing the reserved characters for quite a lot of file systems.
It also has a plethora of other information about each file ...
Check if Python Package is installed
What's a good way to check if a package is installed while within a Python script? I know it's easy from the interpreter, but I need to do it within a script.
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'size_t' vs 'container::size_type'
...pe could be used. So container::size_type is preferable for maximum generality.
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Efficient evaluation of a function at every cell of a NumPy array
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You could just vectorize the function and then apply it directly to a Numpy array each time you need it:
import numpy as np
def f(x):
return x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = np.vectorize(f) # or use a different name if you want to keep the original f
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How to check if an activity is the last one in the activity stack for an application?
I want to know if user would return to the home screen if he exit the current activity.
10 Answers
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UnmodifiableMap (Java Collections) vs ImmutableMap (Google) [duplicate]
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An unmodifiable map may still change. It is only a view on a modifiable map, and changes in the backing map will be visible through the unmodifiable map. The unmodifiable map only prevents modifications for those who only have the reference to the unmodifiable vi...