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Website screenshots
...re all great solutions a few years back, but the browser tech they are all based on hasn't kept up to date with the latest in HTML5/CSS spec. If you're rendering a site which makes use of webfonts, svg, canvas, flexbox etc then good luck getting an accurate screenshot.. If you do want accurate scree...
Append an object to a list in R in amortized constant time, O(1)?
...n performance. For example, the by_index solution, a very popular solution based on the frequency with which I find it in other SO posts, took 11.6 milliseconds to append 2000 objects, and 953 milliseconds to append ten times that many objects. The overall problem's time grew by a factor of 100, so ...
Find where python is installed (if it isn't default dir)
...ff:
$ python
Python 2.6.6 (r266:84297, Aug 24 2010, 18:13:38) [MSC v.1500 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.executable
'c:\\Python26\\python.exe'
>>> sys.exec_prefix
'c:\\Python26'
>&g...
Random string generation with upper case letters and digits
... Using string.ascii_uppercase (or string.ascii_letters + string.digits for base62 instead of base36) is safer in cases where encoding is involved.
– Blixt
May 17 '15 at 18:03
...
Create thumbnail image
...;
break;
}
return flipType;
}
//== convert image to base64
public string convertImageToBase64(Image image)
{
using (MemoryStream ms = new MemoryStream())
{
//convert the image to byte array
image.Save(ms, ImageFormat.Jpeg);
byte[] bin = ms.ToArr...
Prevent body scrolling but allow overlay scrolling
...verlay:
.overlay {
overscroll-behavior: contain;
...
}
Codepen demo
Currently works in Chrome, Firefox and IE(caniuse)
For more details check google developers article.
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improv...
How can I find where Python is installed on Windows?
...InstallPath
HKCU\SOFTWARE\Python\PythonCore\versionnumber\InstallPath
In 64-bit Windows, it will be under the Wow6432Node key:
HKLM\SOFTWARE\Wow6432Node\Python\PythonCore\versionnumber\InstallPath
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how to check the dtype of a column in python pandas
...select_dtypes('bool'). It may be used even for selecting groups of columns based on dtype:
test = pd.DataFrame({'bool' :[False, True], 'int64':[-1,2], 'int32':[-1,2],'float': [-2.5, 3.4],
'compl':np.array([1-1j, 5]),
'dt' :[pd.Timestamp('2013-01-02'), pd....
Android: How to put an Enum in a Bundle?
...
Based on this: stackoverflow.com/questions/15521309/…, custom Enums are not serializable. So the custom fields in an Enum will not be serialized. How do you deal with this?
– b.lit
Ja...
How to use http.client in Node.js if there is basic authorization
...c in this case and the username:password combination which gets encoded in Base64:
var username = 'Test';
var password = '123';
var auth = 'Basic ' + Buffer.from(username + ':' + password).toString('base64');
// new Buffer() is deprecated from v6
// auth is: 'Basic VGVzdDoxMjM='
var header = {'Ho...