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Pandas - How to flatten a hierarchical index in columns
...eed.
From panda's own documentation:
MultiIndex.to_flat_index()
Convert a MultiIndex to an Index of Tuples containing the level values.
A simple example from its documentation:
import pandas as pd
print(pd.__version__) # '0.23.4'
index = pd.MultiIndex.from_product(
[['foo', 'ba...
How can I turn a List of Lists into a List in Java 8?
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You can use flatMap to flatten the internal lists (after converting them to Streams) into a single Stream, and then collect the result into a list:
List<List<Object>> list = ...
List<Object> flat =
list.stream()
.flatMap(List::stream)
.collec...
Android: Share plain text using intent (to all messaging apps)
... * File imageFile = ...;
* Uri uriToImage = ...; // Convert the File to URI
* Intent shareImage = ShareCompat.IntentBuilder.from(activity)
* .setType("image/png")
* .setStream(uriToImage)
* .getIntent();
*/
...
How do you get the length of a list in the JSF expression language?
...a function to your Bean that returns the length:
In class MyBean:
public int getSomelistLength() { return this.somelist.length; }
In your JSF page:
#{MyBean.somelistLength}
Two: If you're using Facelets (Oh, God, why aren't you using Facelets!), you can add the fn namespace and use the length f...
Best way to get InnerXml of an XElement?
...would ever be more efficient in these conditions because of the penalty of converting a large list to a large array (even obvious here with smaller lists).
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ASP MVC in IIS 7 results in: HTTP Error 403.14 - Forbidden
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Maybe it's useful to someone:
After converting my app to MVC 4 with .NET framework 4.5 and installing the framework on my server with IIS 7.0 I encountered the same 'forbidden' error mentioned in the question. I tried all options described above to no avail, wh...
Zooming MKMapView to fit annotation pins?
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I have converted the answer by Rafael Moreira. The credit goes to him.
For those of you looking for the Swift version, here is the code:
func zoomToFitMapAnnotations(aMapView: MKMapView) {
guard aMapView.annotations.count >...
postgresql list and order tables by size
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This will be more clear.
pg_size_pretty(<numeric_value>) - converts no.of bytes to human-readable format.
pg_database_size(<db_name>) - gets database size in bytes.
pg_total_relation_size(<relation_name>) - gets total size of table and its index in bytes.
pg_relation_s...
Disable ONLY_FULL_GROUP_BY
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awesome, worked for me, just i need to convert this on permanently
– Fernando Torres
Oct 21 '19 at 19:06
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Laravel Check If Related Model Exists
... 1 or more items, evaluates to true as well
count($model->relation); // int > 0 that evaluates to true
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