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Changing navigation bar color in Swift
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How can I multiply all items in a list together with Python?
...tools import reduce
>>> reduce(lambda x, y: x*y, [1,2,3,4,5,6])
720
Python 2: use reduce:
>>> reduce(lambda x, y: x*y, [1,2,3,4,5,6])
720
For compatible with 2 and 3 use pip install six, then:
>>> from six.moves import reduce
>>> reduce(lambda x, y: x*y, [1,...
What are Aggregates and PODs and how/why are they special?
...yntax, etc.) please leave a comment, I'll edit.
This answer applies to C++03. For other C++ standards see:
C++11 changes
C++14 changes
C++17 changes
What are aggregates and why they are special
Formal definition from the C++ standard (C++03 8.5.1 §1):
An aggregate is an array or a class...
OpenSSL and error in reading openssl.conf file
...ample from the commandline you can type:
set OPENSSL_CONF=c:/libs/openssl-0.9.8k/openssl.cnf
to validate it you can type:
echo %OPENSSL_CONF%
You can also set it as part of the computer's environmental variables so all users and services have it available by default. See, for example, Environm...
Understanding Node.js modules: multiple requires return the same object?
... Petr StodulkaPetr Stodulka
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How do I delete rows in a data frame?
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App Launcher 应用启动器扩展：用于启动其他应用程序的强大工具，支持独立...
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版本
修改内容
1.0 (2020-04-16)
初始版本
2.0 (2020-04-29)
- 允许评估启动值和返回值- 作为独立进程或依赖进程启动
2.1 (2020-06-03)
添加了 MyAppName、MyPackageName
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Passing an array to a query using a WHERE clause
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answered May 25 '09 at 19:37
Flavius StefFlavius Stef
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Activity transition in Android
...edited Feb 27 '19 at 3:24
gian1200
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answered Aug 2 '10 at 16:09
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What does a lazy val do?
...not sure if it is later used.
scala> class X { val x = { Thread.sleep(2000); 15 } }
defined class X
scala> class Y { lazy val y = { Thread.sleep(2000); 13 } }
defined class Y
scala> new X
res5: X = X@262505b7 // we have to wait two seconds to the result
scala> new Y
res6: Y = Y@1555b...