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Python 3.x rounding behavior

...l.Decimal('3.5').quantize(decimal.Decimal('1'), rounding=decimal.ROUND_HALF_UP) >>> Decimal('4') >>> decimal.Decimal('2.5').quantize(decimal.Decimal('1'), rounding=decimal.ROUND_HALF_EVEN) >>> Decimal('2') >>> decimal.Decimal('3.5').quantize(decimal...
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Returning anonymous type in C#

... 32 In C# 7 we can use tuples to accomplish this: public List<(int SomeVariable, string Another...
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How to log PostgreSQL queries?

... In your data/postgresql.conf file, change the log_statement setting to 'all'. Edit Looking at your new information, I'd say there may be a few other settings to verify: make sure you have turned on the log_destination variable make sure you turn on the logging_collect...
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MFC Dialog中嵌入View、动态创建View的方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...的需要手动调一下。代码如下,亲测有效: //.h CView *m_pDemoView; //.cpp 构造函数或OnInitDialog函数 CMainContainer::OnInitDialog() //CDialog才有,像CWnd等没有OnInitDialog可以放在构造函数中,然后OnPaint()函数中改变大小并显示。 { m_pDem...
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How is a CRC32 checksum calculated?

Maybe I'm just not seeing it, but CRC32 seems either needlessly complicated, or insufficiently explained anywhere I could find on the web. ...
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Create a custom event in Java

...en allowed. – cHao Jan 23 '14 at 20:32 6 @GlassGhost: The code that uses this is in a constructor...
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Get __name__ of calling function's module in Python

...e cases. >>> sys._current_frames() {4052: <frame object at 0x03200C98>} You can then "move up" using f_back : >>> f = sys._current_frames().values()[0] >>> # for python3: f = list(sys._current_frames().values())[0] >>> print f.f_back.f_globals['__file__...
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Multiple columns index when using the declarative ORM extension of sqlalchemy

...'table_A' id = Column(Integer, primary_key=True) a = Column(String(32), index=True) b = Column(String(32), index=True) if you'd like a composite index, again Table is present here as usual you just don't have to declare it, everything works the same (make sure you're on recent 0.6 or 0...
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Git: can't undo local changes (error: path … is unmerged)

... answered Jun 11 '10 at 8:09 zed_0xffzed_0xff 28.2k77 gold badges4747 silver badges7070 bronze badges ...
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How do I set up curl to permanently use a proxy? [closed]

...ou can make a alias in your ~/.bashrc file : alias curl="curl -x <proxy_host>:<proxy_port>" Another solution is to use (maybe the better solution) the ~/.curlrc file (create it if it does not exist) : proxy = <proxy_host>:<proxy_port> ...