大约有 3,285 项符合查询结果（耗时：0.0267秒） [XML]
Select Last Row in the Table
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Why are you using created_at column? Much faster to use primary key ID. Laravel 5.x Files::orderBy(id', 'desc')->first(); Order by date works longer because date is string and most likely not indexed. While primary key is indexed and works super fast. Even if cre...
Install tkinter for Python
...tall
It may seem a pain, but the files are tiny and installation is very fast.
Then re-run python setup.py build and python setup.py install in your python installation directory - and it should work. It worked for me - and I can now import Tkinter etc to my heart's content - yipidy-yay. An entir...
Git error when trying to push — pre-receive hook declined
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I'd bet that you are trying a non-fast-forward push and the hook blocks it. If that's the case, simply run git pull --rebase before pushing to rebase your local changes on the newest codebase.
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Is there a Python caching library?
...y Used cache, so there is no expiration time for the items in it, but as a fast hack it's very useful.
from functools import lru_cache
@lru_cache(maxsize=256)
def f(x):
return x*x
for x in range(20):
print f(x)
for x in range(20):
print f(x)
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How to get object length [duplicate]
...und underscore at this CDN - it's hosted on Amazon servers so it should be fast and reliable.
– Šime Vidas
Apr 4 '11 at 0:33
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Determine Whether Integer Is Between Two Other Integers?
...in range(10000, 30001) as suggested by other solution? Additionally, is it faster or slower when using set instead of range?
– Sung Cho
Aug 12 '15 at 0:37
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How Big can a Python List Get?
... described on Effbot.
Python lists are actually implemented as vector for fast random access, so the container will basically hold as many items as there is space for in memory. (You need space for pointers contained in the list as well as space in memory for the object(s) being pointed to.)
Appen...
Finding median of list in Python
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You can try the quickselect algorithm if faster average-case running times are needed. Quickselect has average (and best) case performance O(n), although it can end up O(n²) on a bad day.
Here's an implementation with a randomly chosen pivot:
import random
def s...
Installing SetupTools on 64-bit Windows
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can't believe how fast and easy this solution was. I spent hours stuck on other avenues.
– Brett
Mar 2 '13 at 22:06
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How to use 'cp' command to exclude a specific directory?
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rsync is fast and easy:
rsync -av --progress sourcefolder /destinationfolder --exclude thefoldertoexclude
You can use --exclude multiples times.
rsync -av --progress sourcefolder /destinationfolder --exclude thefoldertoexclude --...