大约有 39,000 项符合查询结果（耗时：0.0729秒） [XML]
Convert a character digit to the corresponding integer in C
...
15 Answers
15
Active
...
Why does this method print 4?
...g((P - (X - M - C*R))/R) = 0.
Example 2: Suppose that
X = 100
M = 1
R = 5
P = 12
Then C = 19, and cnt = 2.
Example 3: Suppose that
X = 101
M = 1
R = 5
P = 12
Then C = 20, and cnt = 3.
Example 4: Suppose that
X = 101
M = 2
R = 5
P = 12
Then C = 19, and cnt = 2.
Thus, we see that bot...
Getting the difference between two sets
...
answered Sep 5 '13 at 19:42
Prabhaker APrabhaker A
7,34711 gold badge1515 silver badges2424 bronze badges
...
Is it possible to have multiple statements in a python lambda expression?
...e found in the heapq module.
>>> import heapq
>>> l = [5,2,6,8,3,5]
>>> heapq.nsmallest(l, 2)
[2, 3]
So just use:
map(lambda x: heapq.nsmallest(x,2)[1], list_of_lists)
It's also usually considered clearer to use a list comprehension, which avoids the lambda altoget...
Apply function to all elements of collection through LINQ [duplicate]
...
answered May 5 '09 at 6:11
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
...
Syntax behind sorted(key=lambda: …)
...
Gaurang Tandon
5,39799 gold badges3333 silver badges6868 bronze badges
answered Jan 23 '12 at 2:26
EvanEvan
...
Xcode 5.1 - No architectures to compile for (ONLY_ACTIVE_ARCH=YES, active arch=x86_64, VALID_ARCHS=i
After updating to Xcode 5.1, I can no longer build my project for the 64-bit simulator, receiving this error:
18 Answers
...
What does T&& (double ampersand) mean in C++11?
...n std::unique_ptr<T>(new T(a1));
}
If we called factory<foo>(5), the argument will be deduced to be int&, which will not bind to a literal 5, even if foo's constructor takes an int. Well, we could instead use A1 const&, but what if foo takes the constructor argument by non-con...
Using git repository as a database backend
...d document database. I have a tree of categories (~1000 categories, up to ~50 categories on each level), each category contains several thousands (up to, say, ~10000) of structured documents. Each document is several kilobytes of data in some structured form (I'd prefer YAML, but it may just as well...
Which timestamp type should I choose in a PostgreSQL database?
...();
now
-------------------------------
2011-05-27 15:47:58.138995-07
(1 row)
test=> SELECT NOW() AT TIME ZONE 'UTC';
timezone
----------------------------
2011-05-27 22:48:02.235541
(1 row)
Note that AT TIME ZONE 'UTC' strips time zone info an...