大约有 39,125 项符合查询结果（耗时：0.0504秒） [XML]
Network usage top/htop on Linux
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answered Dec 15 '08 at 11:12
EgilEgil
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How does std::move() transfer values into RValues?
... even mean and how can it bind to lvalue?
To allow perfect forwarding, C++11 standard provides special rules for reference collapsing, which are as follows:
Object & & = Object &
Object & && = Object &
Object && & = Object &
Object && &&a...
Magic number in boost::hash_combine
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edited Feb 9 '11 at 18:46
answered Feb 9 '11 at 18:32
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Regex: Specify “space or start of string” and “space or end of string”
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answered Jul 15 '11 at 21:32
Jacob EggersJacob Eggers
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How to make an element in XML schema optional?
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answered Feb 11 '12 at 20:28
Dmitry KudryavtsevDmitry Kudryavtsev
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Using current time in UTC as default value in PostgreSQL
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FWIW, running this query in PostgreSQL 11.5: ALTER TABLE testcase_result ADD COLUMN date_created TIMESTAMP WITHOUT TIME ZONE DEFAULT (NOW() AT TIME ZONE "UTC") NOT NULL; fails with: ERROR: column "UTC" does not exist. Make sure 'utc' is all lower-case.
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Ruby Array find_first object?
...ethod if you wanted to return first value where block returns true
[1,2,3,11,34].detect(&:even?) #=> 2
OR
[1,2,3,11,34].detect{|i| i.even?} #=> 2
If you wanted to return all values where block returns true then use select
[1,2,3,11,34].select(&:even?) #=> [2, 34]
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form_for but to post to a different action
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answered Mar 16 '11 at 2:43
AustinAustin
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grepping using the “|” alternative operator
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answered Jul 21 '11 at 12:21
Jeff FosterJeff Foster
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Regular expression for exact match of a string
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Community♦
111 silver badge
answered Apr 22 '11 at 6:29
user237419user237419
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