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Determine if code is running as part of a unit test
...Dialogs. The implementation class displays all pop up dialogs (MessageBox, File dialogs, Color picker, database connection dialog etc). Classes that need to display message boxes accept ICommonDiaglogs as a constructor parameter that we can then mock in the unit test. Bonus: You can assert on expect...
Correct way to use get_or_create?
...nnon',
defaults={'birthday': date(1940, 10, 9)},
)
# get_or_create() didn't have to create an object.
>>> created
False
Explanation:
Fields to be evaluated for similarity, have to be mentioned outside defaults. Rest of the fields have to be included in defaults. In case CREATE event...
is not JSON serializable
...ur case, self.get_queryset() contains a mix of django objects and dicts inside.
One option is to get rid of model instances in the self.get_queryset() and replace them with dicts using model_to_dict:
from django.forms.models import model_to_dict
data = self.get_queryset()
for item in data:
it...
How can I make pandas dataframe column headers all lowercase?
...
@PawelKranzberg Do you have any idea how to lower the column names of MultiIndex
– curious_nustian
May 2 at 19:44
1
...
Count the number of occurrences of a character in a string in Javascript
...es new instances of 'Array' for each match. Don't try that for a >100MB file via FileReader. You can actually easily observe the EXACT resource usage using Chrome's profiler option.
3.
var stringsearch = "o"
,str = "this is foo bar";
for(var count=-1,index=-2; index != -1; count++,index=str.in...
How can I mock requests and the response?
...
This is how you can do it (you can run this file as-is):
import requests
import unittest
from unittest import mock
# This is the class we want to test
class MyGreatClass:
def fetch_json(self, url):
response = requests.get(url)
return response.json...
How do I cast a variable in Scala?
...phics2D] method, but with greater flexibility. For example, you could provide different branches for various types, effectively performing multiple conditional casts at the same time. Finally, you don't really need to throw an exception in the catch-all area, you could also return null (or prefera...
GoTo Next Iteration in For Loop in java
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
LINQ to Entities case sensitive comparison
...l_CP1_CS_AS.
The fragile way to do this is with code. Add a new migration file and then add this inside the Up method:
public override void Up()
{
Sql("ALTER TABLE Thingies ALTER COLUMN Name VARCHAR(MAX) COLLATE SQL_Latin1_General_CP1_CS_AS NOT NULL");
}
But
You can create custom annotation ...
Are the PUT, DELETE, HEAD, etc methods available in most web browsers?
... the
form finds itself, if any, and otherwise not submit.
The invalid value default for these attributes is the GET state
I.e. HTML forms only support GET and POST as HTTP request methods. A workaround for this is to tunnel other methods through POST by using a hidden form field which is ...