大约有 1,200 项符合查询结果（耗时：0.0355秒） [XML]
What does `m_` variable prefix mean?
... ^
1 error generated.
http://coliru.stacked-crooked.com/a/f38e7dbb047687ad
"m_" states for the "member". Prefix "_" is also common.
You shouldn't use it in programming languages that solve this problem by using different conventions/grammar.
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mongodb: insert if not exists
...t; db.getCollection("test").find()
{ "_id" : ObjectId("50c8e35adde18a44f284e7ac"), "a" : 1, "b" : 2, "c" : 3 }
> db.getCollection("test").ensureIndex ({"a" : 1}, {unique: true})
> db.getCollection("test").insert({a:2, b:12, c:13}) # This works
> db.getCollection("test").insert({a:1, b:...
How does this print “hello world”?
..., which only has the 6th bit on), you could OR the 5-bit
codification with 96 (96₁₀ = 1100000₂) and that should be enough to do the mapping, but that wouldn't work for space (darn space!)
Now we know that special care has to be taken to process space at the same time as the other characters. ...
How do I use LINQ Contains(string[]) instead of Contains(string)
...onvert the array to an IList<T>. msdn.microsoft.com/en-us/library/19e6zeyy.aspx
– spoulson
Oct 13 '08 at 1:11
T...
How can I calculate an md5 checksum of a directory?
...b; touch b/file-2; touch b/file-1 $ (cd a; tar -c . | md5sum) fb29e7af140aeea5a2647974f7cdec77 - $ (cd b; tar -c . | md5sum) a3a39358158a87059b9f111ccffa1023 -
– Dieter_be
Nov 14 '11 at 13:01
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Escape a dollar sign in string interpolation
... answered Jun 1 '13 at 18:01
4e64e6
10.2k33 gold badges4545 silver badges5656 bronze badges
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How to edit incorrect commit message in Mercurial? [duplicate]
... If you get abort: can't rebase immutable changeset 43ab8134e7af you must first flip the commit to draft: hg phase -f -d 45:c3a3a271d11c - see Mecurial Phases for more.
– Daniel Sokolowski
Sep 3 '13 at 13:13
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Spring @Transactional - isolation, propagation
... community wiki
16 revs, 6 users 87%Johan Sjöberg
...
Streaming Audio from A URL in Android using MediaPlayer?
.../npr/android/news/PlaybackService.java?r=7cf2352b5c3c0fbcdc18a5a8c67d836577e7e8e3
And this is the StreamProxy class: http://code.google.com/p/npr-android-app/source/browse/Npr/src/org/npr/android/news/StreamProxy.java?r=e4984187f45c39a54ea6c88f71197762dbe10e72
The NPR app is also still getting the...
Fastest way to find second (third…) highest/lowest value in vector or column
...746.7627 1433.221 1500.7865 13768.148 100
For 1 million numbers:
N = 1e6 #evaluates to 1 million
x = rnorm(N)
microbenchmark::microbenchmark(
Rfast = Rfast::nth(x,5,descending = T),
maxN = maxN(x,5),
order = x[order(x, decreasing = T)[5]]
)
Unit: milliseconds
expr min ...