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Pure virtual destructor in C++
... have an implementation, undefined behavior will ensue. On one popular platform, that will invoke the purecall handler and crash.
Edit: fixing the declaration to be more conformant, compiled with http://www.comeaucomputing.com/tryitout/
...
海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...把每个词变成hash值，比如“美国”通过hash算法计算为 100101,“51区”通过hash算法计算为 101011。这样我们的字符串就变成了一串串数字，还记得文章开头说过的吗，要把文章变为数字计算才能提高相似度计算性能，现在是降维过...
Can we append to a {% block %} rather than overwrite?
...amework in django and the django-cms. Yes there is the Media class used in forms in django, but really that doesn't work that well. Usually the frontend guys want to decide on css and javascript files to be included and they don't want to have to edit Python files to change that neither did I want t...
How can I increment a date by one day in Java?
...
Something like this should do the trick:
String dt = "2008-01-01"; // Start date
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Calendar c = Calendar.getInstance();
c.setTime(sdf.parse(dt));
c.add(Calendar.DATE, 1); // number of days to add
dt = sdf.format(c.getTime());...
How do I get the filepath for a class in Python?
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
vim and NERD Tree extension - adding a file
...xchange.using('gps', function() { StackExchange.gps.track('embedded_signup_form.view', { location: 'question_page' }); });
$window.unbind('scroll', onScroll);
}
};
...
How do I make sure every glyph has the same width?
...simple and easy to scale glyph or any icon using this css
> .fa { transform: scale(1.5,1); }
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How do I convert uint to int in C#?
...: 0000000000 (00-00-00-00)
------------------------------
int....: 0000000001 (01-00-00-00)
asUint.: 0000000001 (01-00-00-00)
------------------------------
int....: -0000000001 (FF-FF-FF-FF)
asUint.: 4294967295 (FF-FF-FF-FF)
------------------------------
int....: 2147483647 (FF-FF-FF-7F)
asUint.: ...
How do I get a raw, compiled SQL query from a SQLAlchemy expression?
...ique with string content received from untrusted
input, such as from web forms or other user-input applications.
SQLAlchemy’s facilities to coerce Python values into direct SQL string
values are not secure against untrusted input and do not validate the
type of data being passed. Always us...
How to count certain elements in array?
...ersely nowadays as [...].filter(x => x==2).length. If you care about performance, note that while this is asymptotically the same performance as the for-loop (O(N) time), it may require O(N) extra memory (instead of O(1) memory) because it will almost certainly generate an intermediate array and ...