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Check if a program exists from a Makefile
...accepted answer) only works if the variable being evaluated is immediately set (:=) instead of lazily set (=). However, a downside of using immediately set variables is that they are evaluated at declaration time, whereas lazily set variables are evaluated when they are called. This means you would ...
R memory management / cannot allocate vector of size n Mb
...e to get 2.4 GB for R, but now comes the worse...
open R and create a data set of 1.5 GB, then reduce its size to 0.5 GB, the Resource Monitor shows my RAM is used at nearly 95%.
use gc() to do garbage collection => it works, I can see the memory use go down to 2 GB
Additional advice that wor...
PDO closing connection
...at is, in every practical situation). To close the connection, you have to set both the PDO object AND the PDOStatement object to null. See here: php.net/manual/en/pdo.connections.php#114822
– Ilmari
May 12 '17 at 11:12
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How to use UTF-8 in resource properties with ResourceBundle
...;
if (connection != null) {
connection.setUseCaches(false);
stream = connection.getInputStream();
}
}
} else {
stream = loader.getResourceAsStream(resourceName);
}
if (stream != nu...
bash: mkvirtualenv: command not found
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Setting WORKON_HOME to "~/.virtualenvs" (default value) allows to set private virtualenvs
– Pierre de LESPINAY
Aug 19 '14 at 12:55
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How to open standard Google Map application from my application?
...Intent mapIntent = new Intent(Intent.ACTION_VIEW, gmmIntentUri); mapIntent.setPackage("com.google.android.apps.maps"); startActivity(mapIntent);
– David Thompson
Mar 9 '17 at 12:14
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Confused about __str__ on list in Python [duplicate]
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__repr__ should not be set to __str__ unconditionally. __repr__ should create a "representation, that should look like a valid Python expression that could be used to recreate an object with the same value" In this case, this would rather be Node(2...
How to hide one item in an Android Spinner
... or more than one item I think that you can implement your own adapter and set the index (or array list of indexes) that you want to hide.
public class CustomAdapter extends ArrayAdapter<String> {
private int hidingItemIndex;
public CustomAdapter(Context context, int textViewResou...
Is there a Rake equivalent in Python?
...
Paver has a similar set of goals, though I don't really know how it compares.
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In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
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@leo-the-manic, @JensTimmerman, @utapyngo Setting the property value of your class won't have an effect on inherited fields. You have to act on the _meta of the parent class, e.g. MyParentClass._meta.get_field('email').blank = False (to make an inherited email field ...