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What is the purpose of willSet and didSet in Swift?
... for instance to notify other objects that the property just changed. When all you have is get/set, you need another field to hold the value. With willSet and didSet, you can take action when the value is modified without needing another field. For instance, in that example:
class Foo {
var myP...
ModelSerializer using model property
... Meta is optional. If you omit fields, in the above example, you would get all the MyModel fields plus ext_link in the serialized data. And this is really awesome for complex models! EDIT: At least, this is true for djangorestframework==2.3.14.
– e.thompsy
Feb ...
undefined reference to boost::system::system_category() when compiling
...raries. I have the 1.46-dev Boost libraries from the Ubuntu Repository installed, but I get an error when compiling the program.
...
How to calculate the difference between two dates using PHP?
...ferred way of doing this is like described by jurka below. My code is generally only recommended if you don't have PHP 5.3 or better.
Several people in the comments have pointed out that the code above is only an approximation. I still believe that for most purposes that's fine, since the usage of...
How to disable python warnings
...lter("ignore")
fxn()
I don't condone it, but you could just suppress all warnings with this:
import warnings
warnings.filterwarnings("ignore")
Ex:
>>> import warnings
>>> def f():
... print('before')
... warnings.warn('you are warned!')
... print('after')
>>> ...
How to convert a Django QuerySet to a list
...
Why not just call list() on the Queryset?
answers_list = list(answers)
This will also evaluate the QuerySet/run the query. You can then remove/add from that list.
...
What is the best way to prevent session hijacking?
Specifically this is regarding when using a client session cookie to identify a session on the server.
12 Answers
...
jQuery or CSS selector to select all IDs that start with some string [duplicate]
How can I select all elements whose id starts with "player_"?
4 Answers
4
...
Dynamically load JS inside JS [duplicate]
...se my own implementation of it like:
jQuery.loadScript = function (url, callback) {
jQuery.ajax({
url: url,
dataType: 'script',
success: callback,
async: true
});
}
and use it like:
if (typeof someObject == 'undefined') $.loadScript('url_to_someScript.js...
What are the differences between json and simplejson Python modules?
...ossible.
A good practice, in my opinion, is to use one or the other as a fallback.
try:
import simplejson as json
except ImportError:
import json
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