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Create Django model or update if exists
...o update the user object.
Sample use is as follows:
# In both cases, the call will get a person object with matching
# identifier or create one if none exists; if a person is created,
# it will be created with name equal to the value in `name`.
# In this case, if the Person already exists, its ex...
ASP.NET MVC Html.ValidationSummary(true) does not display model errors
...error you're adding has the key 'error' so it will not display in when you call ValidationSummary(true). You need to add your custom error message with an empty key like this:
ModelState.AddModelError(string.Empty, ex.Message);
...
Is this the right way to clean-up Fragment back stack when leaving a deeply nested stack?
...) is async, meaning the clearing up does not occur at the exact moment you call the method.
– Genc
Sep 5 '16 at 10:15
6
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How to append rows to an R data frame
...1() (the approach below) is incredibly inefficient because of how often it calls data.frame and because growing objects that way is generally slow in R. f3() is much improved due to preallocation, but the data.frame structure itself might be part of the bottleneck here. f4() tries to bypass that bot...
jQuery: serialize() form and other parameters
...n (in hidden fields if necessary) so that it can be serialised in a single call. This way if JS is disabled or fails, the form submission should still have a failsafe and include all data when sent.
– Rory McCrossan
Oct 15 '16 at 12:12
...
How to develop a soft keyboard for Android? [closed]
...d
clone this repo: LatinIME
About your questions:
An inputMethod is basically an Android Service, so yes, you can do HTTP and all the stuff you can do in a Service.
You can open Activities and dialogs from the InputMethod. Once again, it's just a Service.
I've been developing an IME, so ask aga...
print memory address of Python variable [duplicate]
...s the actual memory address of the variable. If you want it in hex format, call hex() on it.
x = 5
print hex(id(x))
this will print the memory address of x.
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Android notification doesn't disappear after clicking the notifcation
...user dismisses the notification.
The user clicks the notification, and you called setAutoCancel() when you created the notification.
You call cancel() for a specific notification ID. This method also deletes ongoing notifications.
You call cancelAll(), which removes all of the notifications you ...
Asynchronous Requests with Python requests
...each object (your task)
Add that function as an event hook in your request
Call async.map on a list of all the requests / actions
Example:
from requests import async
# If using requests > v0.13.0, use
# from grequests import async
urls = [
'http://python-requests.org',
'http://httpbin...
How do you create a random string that's suitable for a session ID in PostgreSQL?
...
random() gets called length times (like in many of the other solutions). Is there a more efficient way to choose from 62 characters each time? How does this perform compared to md5()?
– ma11hew28
Feb ...