大约有 30,000 项符合查询结果（耗时：0.0463秒） [XML]
date format yyyy-MM-ddTHH:mm:ssZ
...this should be pretty simple, but could not get it :(.
In this format Z is time zone.
T is long time pattern
How could I get a date in this format except by using
...
Time complexity of Euclid's Algorithm
I am having difficulty deciding what the time complexity of Euclid's greatest common denominator algorithm is. This algorithm in pseudo-code is:
...
Best way to strip punctuation from a string
... at as low a level as possible pays off.
Timing code:
import re, string, timeit
s = "string. With. Punctuation"
exclude = set(string.punctuation)
table = string.maketrans("","")
regex = re.compile('[%s]' % re.escape(string.punctuation))
def test_set(s):
return ''.join(ch for ch in s if ch no...
Correct way to use StringBuilder in SQL
...elf [or more, if it knows it needs more to satisfy a specific append] each time it runs out of room).
You may have heard that string concatenation will use a StringBuilder under the covers if compiled with the Sun/Oracle compiler. This is true, it will use one StringBuilder for the overall expressi...
Python time measure function
I want to create a python function to test the time spent in each function and print its name with its time, how i can print the function name and if there is another way to do so please tell me
...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
I wanted to track the performance of my code so I stored the start and end time using System.DateTime.Now . I took the difference between the two as the time my code to execute.
...
Working with time DURATION, not time of day
...
You can easily do this with the normal "Time" data type - just change the format!
Excels time/date format is simply 1.0 equals 1 full day (starting on 1/1/1900). So 36 hours would be 1.5. If you change the format to [h]:mm, you'll see 36:00.
Therefore, if you wan...
getting date format m-d-Y H:i:s.u from milliseconds
...ll always generate 000000 since it takes an integer parameter, whereas DateTime::format() does support microseconds if DateTime was created with microseconds.
So use as simple:
$micro_date = microtime();
$date_array = explode(" ",$micro_date);
$date = date("Y-m-d H:i:s",$date_array[1]);
echo "Dat...
How to optimize for-comprehensions and loops in Scala?
...
Why is his functional algorithm still 55 times slower? It doesn't look like it should suffer from such horrible performance
– Elijah
Jun 16 '11 at 20:10
...
Python: List vs Dict for look up table
...arge sets/dicts. The worst case scenario according to wiki.python.org/moin/TimeComplexity is O(n). I guess it depends on the internal hashing implementation at what point the average time diverges from O(1) and starts converging on O(n). You can help the lookup performance by compartmentalizing the ...