大约有 47,000 项符合查询结果(耗时:0.0415秒) [XML]

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`from … import` vs `import .` [duplicate]

... I just tried import urllib.request and it doesn't work at all (python 2.6.5 Ubuntu). – tkone Feb 24 '12 at 23:33 6 ...
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How can I search for a multiline pattern in a file?

I needed to find all the files that contained a specific string pattern. The first solution that comes to mind is using find piped with xargs grep : ...
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What's the difference between Spring Data's MongoTemplate and MongoRepository?

...goRepository but struggled with complex queries to find examples or to actually understand the Syntax. 3 Answers ...
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How to get object length [duplicate]

... This is actually worse than using a simple loop and counter because of the added overhead of the callback function. – nullability Feb 19 '13 at 17:35 ...
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What does `:_*` (colon underscore star) do in Scala?

...tes: MetaData, scope: NamespaceBinding, child: Node*) which is called as new Elem(prefix, label, attributes, scope, child1, child2, ... childN) but here there is only a sequence, not child1, child2, etc. so this allows the result sequence to be used as the input to the constru...
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Is it worth using Python's re.compile?

...uick glance at the actual Python 2.5 library code, I see that Python internally compiles AND CACHES regexes whenever you use them anyway (including calls to re.match()), so you're really only changing WHEN the regex gets compiled, and shouldn't be saving much time at all - only the time it takes to ...
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mongodb: insert if not exists

... has built-in support for this. Pass an extra parameter to your update() call: {upsert:true}. For example: key = {'key':'value'} data = {'key2':'value2', 'key3':'value3'}; coll.update(key, data, upsert=True); #In python upsert must be passed as a keyword argument This replaces your if-find-els...
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How do I set the UI language in vim?

...my OS is set up in German (the standard at our office), I guess vim is actually trying to be helpfull. 15 Answers ...
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What is an ORM, how does it work, and how should I use one? [closed]

... case with a pseudo language: You have a book class, you want to retrieve all the books of which the author is "Linus". Manually, you would do something like that: book_list = new List(); sql = "SELECT book FROM library WHERE author = 'Linus'"; data = query(sql); // I over simplify ... while (row ...
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PHP script to loop through all of the files in a directory?

I'm looking for a PHP script that loops through all of the files in a directory so I can do things with the filename, such as format, print or add it to a link. I'd like to be able to sort the files by name, type or by date created/added/modified. (Think fancy directory "index".) I'd also like to be...