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not None test in Python [duplicate]
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1033
if val is not None:
# ...
is the Pythonic idiom for testing that a variable is not set t...
Is there a faster/shorter way to initialize variables in a Rust struct?
...uct by giving only the non-default values:
let p = cParams { iInsertMax: 10, ..Default::default() };
With some minor changes to your data structure, you can take advantage of an automatically derived default implementation. If you use #[derive(Default)] on a data structure, the compiler will auto...
How to make a chain of function decorators?
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answered Apr 11 '09 at 7:16
Paolo BergantinoPaolo Bergantino
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Making text background transparent but not text itself
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170
Don't use opacity for this, set the background to an RGBA-value instead to only make the backgro...
TypeError: 'dict_keys' object does not support indexing
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mgilsonmgilson
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23
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Test whether a Ruby class is a subclass of another class
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webwurst
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answered Dec 28 '10 at 11:11
Marcel JackwerthMa...
廉价共享存储解决方案2-drbd+cman+gfs2 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...2-drbd+cman+gfs21、修改hosts文件[root@localhost ~]# vi etc hosts127.0.0.1localhost localhost.localdomain localhost4 localhost4.localdomain4...1、修改hosts文件
[root@localhost ~]# vi /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 lo...
java: Class.isInstance vs Class.isAssignableFrom
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edited Apr 24 '18 at 22:00
answered Oct 16 '10 at 14:55
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How do I get the name of the active user via the command line in OS X?
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answered Jul 9 '09 at 16:40
kentkent
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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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