大约有 47,000 项符合查询结果（耗时：0.0457秒） [XML]
How to use Git?
... just edit the Answer (added an alternate to a dead link). If not, let me know. (I figured it's easier to just ask YOU than to find the rule on this)
– Clay Nichols
Aug 14 '16 at 16:22
...
Explain ExtJS 4 event handling
...k event handler.
Let's retrieve Element:
var el = Ext.get('test_node');
Now let's check docs for click event. It's handler may have three parameters:
click( Ext.EventObject e, HTMLElement t, Object eOpts )
Knowing all this stuff we can assign handler:
// event name event handler...
PHP calculate age
...:createFromFormat('d/m/Y', '12/02/1973', $tz)
->diff(new DateTime('now', $tz))
->y;
As of PHP 5.3.0 you can use the handy DateTime::createFromFormat to ensure that your date does not get mistaken for m/d/Y format and the DateInterval class (via DateTime::diff) to get the number of ...
Datetime - Get next tuesday
...versatile, as you can specify the day of week, but it's your call :) (I've now edited mine to give a more generalized version.)
– Jon Skeet
Jun 14 '11 at 15:48
...
What's a good rate limiting algorithm?
... = 8.0; // unit: seconds
allowance = rate; // unit: messages
last_check = now(); // floating-point, e.g. usec accuracy. Unit: seconds
when (message_received):
current = now();
time_passed = current - last_check;
last_check = current;
allowance += time_passed * (rate / per);
if (allowance...
Memoization in Haskell?
...u can check the work so far by verifying that toList nats gives you [0..]
Now,
f_tree :: Tree Int
f_tree = fmap (f fastest_f) nats
fastest_f :: Int -> Int
fastest_f = index f_tree
works just like with list above, but instead of taking linear time to find each node, can chase it down in loga...
Why do we check up to the square root of a prime number to determine if it is prime?
... is not a prime, it can be factored into two factors a and b:
n = a * b
Now a and b can't be both greater than the square root of n, since then the product a * b would be greater than sqrt(n) * sqrt(n) = n. So in any factorization of n, at least one of the factors must be smaller than the square ...
What is memory fragmentation?
...---
| |
----------------------------------
Now, allocate some of it (5 allocations):
----------------------------------
|aaaabbccccccddeeee |
----------------------------------
Now, free the first four allocations but not the fifth:
---------------------...
I lost my .keystore file?
...
Now it is possible don't worry, here is the full and final steps to reset .JKS file.
Step-1
Download the UPLOAD CERTIFICATE (file name - upload_cert.der) from your Google Play Store Console
Step-2
Go to this LINK http...
How to get the current time in Python
...
Use:
>>> import datetime
>>> datetime.datetime.now()
datetime.datetime(2009, 1, 6, 15, 8, 24, 78915)
>>> print(datetime.datetime.now())
2009-01-06 15:08:24.789150
And just the time:
>>> datetime.datetime.now().time()
datetime.time(15, 8, 24, 78915)
...