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Getting the SQL from a Django QuerySet [duplicate]
...et = MyModel.objects.all()
>>> print(queryset.query)
SELECT "myapp_mymodel"."id", ... FROM "myapp_mymodel"
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How to detect the end of loading of UITableView
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Swift 3 & 4 & 5 version:
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
if let lastVisibleIndexPath = tableView.indexPathsForVisibleRows?.last {
if indexPath == lastVisibleIndexPath {
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When should use Readonly and Get only properties
...during the construction of an object (in the constructor).
private string _name = "Foo"; // field for property Name;
private bool _enabled = false; // field for property Enabled;
public string Name{ // This is a readonly property.
get {
return _name;
}
}
public bool Enabled{ // This is ...
Django Model - Case-insensitive Query / Filtering
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I solved it like this:
MyClass.objects.filter(name__iexact=my_parameter)
There is even a way to use it for substring search:
MyClass.objects.filter(name__icontains=my_parameter)
There's a link to the documentation.
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Opening Vim help in a vertical split window
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how can i map that so when I run :help ____ it always opens like that?
– Tallboy
May 7 '12 at 20:37
13
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How to change a django QueryDict to Python Dict?
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In django 1.6: dict(data._iteritems())
– Bas Koopmans
Nov 20 '13 at 15:20
5
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How to check if running in Cygwin, Mac or Linux?
... will tell you what environment you're running in:
pax> uname -a
CYGWIN_NT-5.1 IBM-L3F3936 1.5.25(0.156/4/2) 2008-06-12 19:34 i686 Cygwin
pax> uname -s
CYGWIN_NT-5.1
And, according to the very helpful schot (in the comments), uname -s gives Darwin for OSX and Linux for Linux, while my Cygw...
How to get a key in a JavaScript object by its value?
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With the Underscore.js library:
var hash = {
foo: 1,
bar: 2
};
(_.invert(hash))[1]; // => 'foo'
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Wrapping a C library in Python: C, Cython or ctypes?
...gist of it):
from ctypes import *
d2xx = WinDLL('ftd2xx')
OK = 0
INVALID_HANDLE = 1
DEVICE_NOT_FOUND = 2
DEVICE_NOT_OPENED = 3
...
def openEx(serial):
serial = create_string_buffer(serial)
handle = c_int()
if d2xx.FT_OpenEx(serial, OPEN_BY_SERIAL_NUMBER, byref(handle)) == OK:
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What does `m_` variable prefix mean?
I often see m_ prefix used for variables ( m_World , m_Sprites ,...) in tutorials, examples and other code mainly related to game development.
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