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Bulk insert with SQLAlchemy ORM
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Compared to inserting the same data from CSV with \copy with psql (from the same client to the same server), I see a huge difference in performance on the server side resulting in about 10x more inserts/s. Apparently is bulk-loading using \copy (or COPY on the ...
Removing nan values from an array
I want to figure out how to remove nan values from my array. My array looks something like this:
11 Answers
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Why does DEBUG=False setting make my django Static Files Access fail?
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Whilst this flag does work, it does not serve the content from the collectstatic folder
– Howie
Aug 14 '13 at 14:05
8
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Including non-Python files with setup.py
...this is a very seamless "upgrade".
Here's a full (but untested) example:
from setuptools import setup, find_packages
setup(
name='your_project_name',
version='0.1',
description='A description.',
packages=find_packages(exclude=['ez_setup', 'tests', 'tests.*']),
package_data={''...
Android WebView: handling orientation changes
...nSaveInstanceState(Bundle outState) in your activity and calling saveState from the webview:
protected void onSaveInstanceState(Bundle outState) {
webView.saveState(outState);
}
Then recover this in your onCreate after the webview has been re-inflated of course:
public void onCreate(...
Is there a tool to convert JavaScript files to TypeScript [closed]
...ipt transpilation despite it (allowing, for example, gradual transitioning from JS to TS). Also, at least some of the errors can be disabled through switches like noImplicitAny (perhaps all, though IDK).
– Venryx
Nov 12 '19 at 3:24
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What should I use Android AccountManager for?
...ager / SyncAdapter / ContentProvider helps if you want to synchronize data from a web resource. Fake/Dumb implementations are required on API 7. Also
If you only want to store data, you should consider a simpler mechanism for data storage
If you only need to fetch an only resource, you can use an ...
Visual Studio TFS shows unchanged files in the list of pending changes
...ever goes away, the command is tfpt uu /noget /r *, which must be executed from the root of the branch. Saying this, although it correctly picks up redundant changes, then claims to undo them, I still see them as checked out in VS and in the Check In dialog, so it seems broken for me :/
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When should you not use virtual destructors?
...destructor when any of the below is true:
No intention to derive classes from it
No instantiation on the heap
No intention to store in a pointer of a superclass
No specific reason to avoid it unless you are really so pressed for memory.
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Most underused data visualization [closed]
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First, I would point you to a very nice tutorial on ggplot2 and ggobi from "Looking at Data" earlier this year. Beyond that I would just highlight one visualization from R, and two graphics packages (which are not as widely used as base graphics, lattice, or ggplot):
Heat Maps
I really like ...