大约有 47,000 项符合查询结果(耗时:0.0492秒) [XML]
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
...om a non-abstract class.
(Note this is only possible since Django 1.10: before Django 1.10, modifying an attribute inherited from an abstract class wasn't possible.)
Original answer
Since Django 1.10 it's
possible!
You just have to do what you asked for:
class Place(models.Model):
...
How to serialize a TimeSpan to XML
... google has suggested that while TimeSpan is serializable, the XmlCustomFormatter does not provide methods to convert TimeSpan objects to and from XML.
...
How can I apply a function to every row/column of a matrix in MATLAB?
You can apply a function to every item in a vector by saying, for example, v + 1 , or you can use the function arrayfun . How can I do it for every row/column of a matrix without using a for loop?
...
Using global variables between files?
...large project, with around 50 files, and I need to define global variables for all those files.
6 Answers
...
Max or Default?
...ounter, Integer?)". I have to do an original check to convert Nothing to 0 for my purposes, but I like getting the results without an exception.
– gfrizzle
Dec 5 '08 at 13:51
2
...
How do I set the size of Emacs' window?
...(interactive)
(if window-system
(progn
;; use 120 char wide window for largeish displays
;; and smaller 80 column windows for smaller displays
;; pick whatever numbers make sense for you
(if (> (x-display-pixel-width) 1280)
(add-to-list 'default-frame-alist (cons 'w...
What is a memory fence?
...
For performance gains modern CPUs often execute instructions out of order to make maximum use of the available silicon (including memory read/writes). Because the hardware enforces instructions integrity you never notice this...
Cron job every three days
...th, etc... then you can just have a conditional in your script that checks for the current day of the month.
if (((date('j') - 1) % 3))
exit();
or, as @mario points out, you can use date('k') to get the day of the year instead of doing it based on the day of the month.
...
How to remove k__BackingField from json when Deserialize
...
@AlumCloud.Com +1 for [DataContract] and [DataMember]. Don't forget to add: System.Runtime.Serialization
– Ian Newland
Aug 13 '15 at 1:06
...
Excel VBA - exit for loop
I would like to exit my for loop when a condition inside is met. How could I exit my for loop when the if condition has been met? I think some kind of exit at the end of my if statement, but don't know how that would work.
...