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What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?
...ying representation, however, the primary difference is the breadth of the API for working with vectors: they have almost all the operations you'd normally associate with lists (with a fusion-driven optimization framework), while UArray have almost no API.
For color images I will wish to store trip...
Why do access tokens expire?
I am just getting started working with Google API and OAuth2. When the client authorizes my app I am given a "refresh token" and a short lived "access token". Now every time the access token expires, I can POST my refresh token to Google and they will give me a new access token.
...
Open directory dialog
...ead:
Third-party libraries, such as Ookii dialogs (.NET 3.5)
The Windows API Code Pack-Shell:
using Microsoft.WindowsAPICodePack.Dialogs;
...
var dialog = new CommonOpenFileDialog();
dialog.IsFolderPicker = true;
CommonFileDialogResult result = dialog.ShowDialog();
Note that this dialog is no...
Manually map column names with class properties
...chNamesWithUnderscores option. At best, if we refactored the configuration API, I would leave the MatchNamesWithUnderscores member in place (that still works, ideally) and add an [Obsolete] marker to point people to the new API.
– Marc Gravell♦
Aug 11 '16 at ...
'App not Installed' Error on Android
...
For me, On Android 9 (API 28), disabling Google Play Protect from play store app worked the trick, and i was able to get rid of the App not Installed error.
To disable Google Play Protect. Open "Play Store" application => tap
on Menu butt...
WebDriver: check if an element exists? [duplicate]
...ust in case anyone needs a pointer to it: selenium.googlecode.com/git/docs/api/java/org/openqa/selenium/…
– Chen Xie
Mar 20 '15 at 22:35
...
How to listen for changes to a MongoDB collection?
...
Since MongoDB 3.6 there will be a new notifications API called Change Streams which you can use for this. See this blog post for an example. Example from it:
cursor = client.my_db.my_collection.changes([
{'$match': {
'operationType': {'$in': ['insert', 'replace']}...
vertical & horizontal lines in matplotlib
...
matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.axhline <- documentation. You should edit your answer to include this link
– tacaswell
Jun 5 '13 at 4:06
...
How can I convert an RGB image into grayscale in Python?
... do it all in matplotlib.
Background:
http://matplotlib.sourceforge.net/api/colors_api.html
http://en.wikipedia.org/wiki/HSL_and_HSV
Alternatively, you could use PIL or the builtin colorsys.rgb_to_yiq() to convert to a colorspace with a true luma value. You could also go all in and roll your o...
mysqli or PDO - what are the pros and cons? [closed]
... be one thing less to learn at that point.
Apart from that I find the PDO API a little more intuitive, and it feels more truly object oriented. mysqli feels like it is just a procedural API that has been objectified, if you know what I mean. In short, I find PDO easier to work with, but that is of ...