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Flattening a shallow list in Python [duplicate]

...st of iterables with a list comprehension, or failing that, what would you all consider to be the best way to flatten a shallow list like this, balancing performance and readability? ...
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linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...e.log visible_hostname 192.168.16.1 cache_mgr lindenstar@163.com acl all src 0.0.0.0/0.0.0.0 http_access allow all 2.2 acl选项的格式如下: acl列表名称 列表类型 [-i] 列表值 列表名称:用于区分Squid的各个访问控制列表,任何两个访问控制列表不...
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What is “the inverse side of the association” in a bidirectional JPA OneToMany/ManyToOne association

...ms to be the owner of the orders. But in the SQL world, one item will actually contain a pointer to the other. Since there is 1 customer for N orders, each order contains a foreign key to the customer it belongs to. This is the "connection" and this means the order "owns" (or literally contains) th...
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Get Android API level of phone currently running my application [duplicate]

...ntly running my application? I am sure its simple but I can not find it as all my searches bring up tons of junk. 4 Answers...
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How best to determine if an argument is not sent to the JavaScript function

...noid (see comments). Using the || operator has become standard practice - all the cool kids do it - but be careful: The default value will be triggered if the argument evaluates to false, which means it might actually be undefined, null, false, 0, '' (or anything else for which Boolean(...) returns...
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navigator.geolocation.getCurrentPosition sometimes works sometimes doesn't

...ame problem, and finding almost no information online about it. Nothing at all in the books. Finally I found this sober query on stackoverflow and (ha!) it was the final impetus I needed to set up an account here. And I have a partial answer, but alas not a complete one. First of all, realise that...
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cancelling a handler.postdelayed process

...nnable, SPLASH_DISPLAY_LENGTH); And this to remove it: myHandler.removeCallbacks(myRunnable); share | improve this answer | follow | ...
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java.io.Console support in Eclipse IDE

...se step-through debugging from Eclipse. You can just run the classes externally by setting the built classes in the bin directories on the JRE classpath. java -cp workspace\p1\bin;workspace\p2\bin foo.Main You can debug using the remote debugger and taking advantage of the class files built in yo...
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How do I return early from a rake task?

... A Rake task is basically a block. A block, except lambdas, doesn't support return but you can skip to the next statement using next which in a rake task has the same effect of using return in a method. task :foo do puts "printed" next put...
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Extension method and dynamic object

...aren't supported by dynamic typing in the form of extension methods, i.e. called as if they were instance methods. However, this will work: dynamic dList = list; Console.WriteLine(Enumerable.First(dList)); Of course, that may or may not be useful. If you could give more information about why and ...