大约有 40,000 项符合查询结果(耗时:0.0719秒) [XML]

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Why is exception handling bad?

... possibly corrupted object. This example may seem stupid (ok, I had to stretch myself a bit to construct one :-)), but, the takeaway is that if a programmer isn't constantly thinking of exceptions, and making sure that every permutation of state gets rolled back whenever there are throws, you get i...
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How to check if all of the following items are in a list?

... Operators like <= in Python are generally not overriden to mean something significantly different than "less than or equal to". It's unusual for the standard library does this--it smells like legacy API to me. Use the equivalent and more clearly-named method, ...
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Define variable to use with IN operator (T-SQL)

... myColumn in (SELECT id FROM myIdTable WHERE id > 10) 2) Using dynamically concatenated TSQL DECLARE @sql varchar(max) declare @list varchar(256) select @list = '1,2,3' SELECT @sql = 'SELECT * FROM myTable WHERE myColumn in (' + @list + ')' exec sp_executeSQL @sql 3) A possible third ...
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How do I create a Python function with optional arguments?

...s): c = kwargs.get('c', None) d = kwargs.get('d', None) #etc myfunc(a,b, c='nick', d='dog', ...) And then kwargs would have a dictionary of all the parameters that are key valued after a,b share ...
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Random “Element is no longer attached to the DOM” StaleElementReferenceException

...r valid. It's close to impossible for WebDriver to make a good guess about all the cases where this might happen - so it throws up its hands and gives control to you, who as the test/app author should know exactly what may or may not happen. What you want to do is explicitly wait until the DOM is in...
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What are the key differences between Apache Thrift, Google Protocol Buffers, MessagePack, ASN.1 and

...nefits vis a vis dynamic languages and a lack of a need for tagging types, etc.). Its schema uses JSON which makes supporting Avro in a new language a bit easier to manage if there's already a JSON library. Again, as with most wheel-reinventing protocol description systems, Avro is also not standa...
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#1071 - Specified key was too long; max key length is 767 bytes

...(which is the most used encoding for newer databases, as it accepts emojis/etc). – Claudio Holanda Sep 8 '16 at 0:48 ...
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Is “inline” without “static” or “extern” ever useful in C99?

... Actually this excellent answer also answers your question, I think: What does extern inline do? The idea is that "inline" can be used in a header file, and then "extern inline" in a .c file. "extern inline" is just how you ins...
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Fatal error in launcher: Unable to create process using “”C:\Program Files (x86)\Python33\python.exe

... Here's how I solved it: open pip.exe in 7zip and extract __main__.py to Python\Scripts folder. In my case it was C:\Program Files (x86)\Python27\Scripts Rename __main__.py to pip.py Run it! python pip.py install something EDIT: If you want to be able to do pip install something...
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What are the respective advantages/limitations of Amazon RDS vs. EC2 with MySQL? [closed]

...failover to offsite replicas, we use the RDS failover, otherwise promotion etc back to new master would become tricky. The offsite replicas mainly are for out-of-cloud backup DR as well as for read/write splitting for reporting environments (our application level is aware of them). HTH ...