大约有 35,451 项符合查询结果（耗时：0.0375秒） [XML]
How to deep copy a list?
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E0_copy is not a deep copy. You don't make a deep copy using list() (Both list(...) and testList[:] are shallow copies).
You use copy.deepcopy(...) for deep copying a list.
deepcopy(x, memo=None, _nil=[])
Deep copy opera...
Guaranteed lifetime of temporary in C++?
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110
The destructor for that sort of temporaries is called at the end of the full-expression. That's ...
How to invoke a Linux shell command from Java
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edited Sep 11 '09 at 15:45
answered Sep 11 '09 at 13:12
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How to create a custom attribute in C#
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edited Sep 30 '19 at 20:33
zdwyer
431010 bronze badges
answered Feb 2 '11 at 20:40
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Hyphenated html attributes with asp.net mvc
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202
Use an underscore in the data attribute name, and it'll magically handle it for you, converting...
How to find largest objects in a SQL Server database?
...ages,
sum(a.data_pages) as DataPages,
(sum(a.total_pages) * 8) / 1024 as TotalSpaceMB,
(sum(a.used_pages) * 8) / 1024 as UsedSpaceMB,
(sum(a.data_pages) * 8) / 1024 as DataSpaceMB
FROM
sys.tables t
INNER JOIN
sys.indexes i ON t.object_id = i.object_id
INNER JOIN
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Ternary Operator Similar To ?:
...Hi".getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res0: String = String
scala> List.getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x}
res1: String = List
Is this adequate for your needs?
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How to sum a variable by group
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404
Using aggregate:
aggregate(x$Frequency, by=list(Category=x$Category), FUN=sum)
Category x
1...
Python, creating objects
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class Student(object):
name = ""
age = 0
major = ""
# The class "constructor" - It's actually an initializer
def __init__(self, name, age, major):
self.name = name
self.age = age
self.major = major
def make_student(name, age,...
Pipe output and capture exit status in Bash
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530
There is an internal Bash variable called $PIPESTATUS; it’s an array that holds the exit statu...