大约有 43,000 项符合查询结果（耗时：0.0557秒） [XML]
Android search with Fragments
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edited May 23 '17 at 11:54
Community♦
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answered May 3 '12 at 21:38
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What is the difference between C, C99, ANSI C and GNU C?
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answered Jun 20 '13 at 9:04
LundinLundin
142k2222 gold badges194194 silver badges315315 bronze badges
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Laravel 4: how to “order by” using Eloquent ORM [duplicate]
Simple question - how do I order by 'id' descending in Laravel 4.
3 Answers
3
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How to check if all of the following items are in a list?
...duplicates, you can use the code:
v1 = sorted(v1)
v2 = sorted(v2)
def is_subseq(v2, v1):
"""Check whether v2 is a subsequence of v1."""
it = iter(v1)
return all(c in it for c in v2)
So, the following line returns False.
is_subseq(v2, v1)
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reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
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4 Answers
4
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SQL Server: What is the difference between CROSS JOIN and FULL OUTER JOIN?
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select COUNT_BIG(*) FROM Traffic t CROSS JOIN Recipient r and SELECT COUNT_BIG(*) FROM Traffic t FULL JOIN Recipient r ON (1=1) they are the same.
– urlreader
Sep 20 '13 at 21:02
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Real life example, when to use OUTER / CROSS APPLY in SQL
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4 Answers
4
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
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144
To clarify on the "This is bad" - you could get all the wheels with 1 select (SELECT * from Wheel;), instead of N+1. With a large N, the pe...
Programmatically saving image to Django ImageField
...actually resides in a method of my model
result = urllib.urlretrieve(image_url) # image_url is a URL to an image
# self.photo is the ImageField
self.photo.save(
os.path.basename(self.url),
File(open(result[0], 'rb'))
)
self.save()
That's a bit confusing because it's pulled out of my...
Does “git fetch --tags” include “git fetch”?
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Note: starting with git 1.9/2.0 (Q1 2014), git fetch --tags fetches tags in addition to what are fetched by the same command line without the option.
See commit c5a84e9 by Michael Haggerty (mhagger):
Previously, fetch's "--tags" option was considered equivale...