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Core Data: Quickest way to delete all instances of an entity
I'm using Core Data to locally persist results from a Web Services call. The web service returns the full object model for, let's say, "Cars" - could be about 2000 of them (and I can't make the Web Service return anything less than 1 or ALL cars.
...
How to efficiently count the number of keys/properties of an object in JavaScript?
...d be removed or overridden you might get unexpected results. By calling it from Object.prototype it makes it little more robust. The reason for using call is because you want to invoke the method on obj instead of on the prototype.
– Renaat De Muynck
May 23 '12...
Java Immutable Collections
From Java 1.6 Collection Framework documentation :
6 Answers
6
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Python ValueError: too many values to unpack [duplicate]
I am getting that exception from this code:
3 Answers
3
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Number of elements in a javascript object
Is there a way to get (from somewhere) the number of elements in a javascript object?? (i.e. constant-time complexity).
6 A...
Build .so file from .c file using gcc command line
...eate the .so file:
gcc hello.o -shared -o libhello.so
EDIT: Suggestions from the comments:
You can use
gcc -shared -o libhello.so -fPIC hello.c
to do it in one step. – Jonathan Leffler
I also suggest to add -Wall to get all warnings, and -g to get debugging information, to your gcc command...
Purpose of Activator.CreateInstance with example?
...ly", ClassName)) but instead of casting with the type. Cast with type made from the ClassName? Like this Type type = Type.GetType(ClassName);obj = (type )Activator.CreateInstance("MyAssembly", ClassName)) ?
– rluks
Mar 26 '15 at 16:09
...
How to remove all event handlers from an event
...ion on the MSDN forums. The sample code below will remove all Click events from button1.
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
button1.Click += button1_Click;
button1.Click += button1_Click2;
button2.Click += button2_Clic...
PHPDoc type hinting for array of objects?
...r Test[] */
private $items;
}
for class properties.
Previous answer from '09 when PHPDoc (and IDEs like Zend Studio and Netbeans) didn't have that option:
The best you can do is say,
foreach ($Objs as $Obj)
{
/* @var $Obj Test */
// You should be able to get hinting after the preced...
Getting the name of a variable as a string
...riables
https://github.com/pwwang/python-varname
In your case, you can do:
from varname import Wrapper
foo = Wrapper(dict())
# foo.name == 'foo'
# foo.value == {}
foo.value['bar'] = 2
For list comprehension part, you can do:
n_jobs = Wrapper(<original_value>)
users = Wrapper(<original_v...