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How to combine two or more querysets in a Django view?
...ss memory than converting each queryset into a list before concatenating.
Now it's possible to sort the resulting list e.g. by date (as requested in hasen j's comment to another answer). The sorted() function conveniently accepts a generator and returns a list:
result_list = sorted(
chain(page...
How do I create a variable number of variables?
... # prints bar, because indices start at 0
lst.append('potatoes') # lst is now ['foo', 'bar', 'baz', 'potatoes']
For ordered sequences, lists are more convenient than dicts with integer keys, because lists support iteration in index order, slicing, append, and other operations that would require a...
How to Update Multiple Array Elements in mongodb
....6 ( and available in the development branch from MongoDB 3.5.12 ) you can now update multiple array elements in a single request.
This uses the filtered positional $[<identifier>] update operator syntax introduced in this version:
db.collection.update(
{ "events.profile":10 },
{ "$set": {...
Multiple Models in a single django ModelForm?
...xin so you can use all generic Class Based Views. Define model, fields and now also child_model and child_field - and then you can wrap fields of both models in a tag like Zach describes.
class ChildModelFormMixin:
''' extends ModelFormMixin with the ability to include ChildModelForm '''
...
Cross-Origin Request Headers(CORS) with PHP headers
...for me in a Linux server, in IIS for some reason just didn't work, I dont know if its my hosting or just it's not suitable for IIS
– ncubica
Oct 17 '14 at 16:58
...
How to delete duplicate lines in a file without sorting it in Unix?
...)\n\1$/!P; D' means "If you're not at the last line, read in another line. Now look at what you have and if it ISN'T stuff followed by a newline and then the same stuff again, print out the stuff. Now delete the stuff (up to the newline)."
– Beta
Sep 18 '09 at ...
How to replace captured groups only?
...e elegant solution >.< Nevertheless, I can move forward with my code now!
– mix3d
Mar 29 '16 at 22:16
9
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Printing a variable memory address in swift
...
Swift 2
This is now part of the standard library: unsafeAddressOf.
/// Return an UnsafePointer to the storage used for `object`. There's
/// not much you can do with this other than use it to identify the
/// object
Swift 3
For Swift ...
How to use custom packages
...rate:
src/
myproject/
mylib/
mylib.go
...
main.go
Now, in the top-level main.go, you could import "myproject/mylib" and it would work OK.
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Getter and Setter?
...ype hint for the method argument) will make setters/getters useful because now your code KNOWS what it is dealing with.
– Sven
Aug 22 '16 at 12:23
3
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