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How to check null objects in jQuery
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what do you think about var _myDiv = $('#myDiv'); ... .... if(_myDiv.lenght) {...} produce exception.
– Nuri YILMAZ
Mar 8 '11 at 19:15
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Difference between del, remove and pop on lists
...so that del is slightly faster, but for a different reason: the lookup for __delitem__ on a type implemented in C happens by index rather than by name, whereas pop needs to be looked up following the whole descriptor protocol. The execution of the functions themselves should take the same amount of ...
Using “super” in C++
.....). You are quite right in your answer, including the chaining, I guess. ^_^ ...
– paercebal
Jun 10 '09 at 16:45
how ...
Evenly distributing n points on a sphere
... And here's a simple implementation in python.
import math
def fibonacci_sphere(samples=1):
points = []
phi = math.pi * (3. - math.sqrt(5.)) # golden angle in radians
for i in range(samples):
y = 1 - (i / float(samples - 1)) * 2 # y goes from 1 to -1
radius = math....
How to set radio button checked as default in radiogroup?
....getId() works as well, thx Ramesh
EDIT2:
android:checkedButton="@+id/my_radiobtn"
works in radiogroup xml
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Programmatically open new pages on Tabs
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You can, in Firefox it works, add the attribute target="_newtab" to the anchor to force the opening of a new tab.
<a href="some url" target="_newtab">content of the anchor</a>
In javascript you can use
window.open('page.html','_newtab');
Said that, I partially ag...
How do you explicitly set a new property on `window` in TypeScript?
...2, no need for .d.ts file as mentioned above
– tanguy_k
Sep 3 '17 at 20:29
6
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Best way to generate random file names in Python
...me
basename = "mylogfile"
suffix = datetime.datetime.now().strftime("%y%m%d_%H%M%S")
filename = "_".join([basename, suffix]) # e.g. 'mylogfile_120508_171442'
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iPad keyboard will not dismiss if modal ViewController presentation style is UIModalPresentationForm
... UIViewController and call it when you want the keyboard gone:
@interface _TempUIVC : UIViewController
@end
@implementation _TempUIVC
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
@end
@implementation UIViewController (Helpers)
- ...
What is the difference between Θ(n) and O(n)?
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one is Big "O"
one is Big Theta
http://en.wikipedia.org/wiki/Big_O_notation
Big O means your algorithm will execute in no more steps than in given expression(n^2)
Big Omega means your algorithm will execute in no fewer steps than in the given expression(n^2)
When both condition are tru...