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How does python numpy.where() work?
...f True/False values, not a single value.
Furthermore, numpy arrays can be indexed by boolean arrays. E.g. x[x>5] yields [6 7 8], in this case.
Honestly, it's fairly rare that you actually need numpy.where but it just returns the indicies where a boolean array is True. Usually you can do what y...
What's the best way of scraping data from a website? [closed]
...programming interface or another mechanism to access that data programmatically.
2 Answers
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Pythonic way to find maximum value and its index in a list?
...value in a list, I can just write max(List) , but what if I also need the index of the maximum value?
10 Answers
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AngularJS - Any way for $http.post to send request parameters instead of JSON?
... return data;
}
return $.param(data);
}
});
That way all calls to $http.post will automatically transform the body to the same param format used by the jQuery $.post call.
Note you may also want to set the Content-Type header per call or globally like this:
$httpProvider.defa...
MySQL Data - Best way to implement paging?
... of the last record from the prevous page you viewed.
This will enable an index on id to be used to find the first record. If you use LIMIT offset, 20 you could find that it gets slower and slower as you page towards the end. As I said, it probably won't matter if you have only 200 records, but it ...
Python: changing value in a tuple
...wn, there are basically two ways of replacing a tuple's element at a given index. Either convert the tuple to a list, replace the element and convert back, or construct a new tuple by concatenation.
In [1]: def replace_at_index1(tup, ix, val):
...: lst = list(tup)
...: lst[ix] = val
...
What do 'real', 'user' and 'sys' mean in the output of time(1)?
...prev comment so): More detail? Use perf [1], [2]. [1] perf.wiki.kernel.org/index.php/Main_Page [2] brendangregg.com/perf.html
– kaiwan
May 9 '15 at 7:46
|...
How to get number of entries in a Lua table?
...
Sadly, it appears the __newindex function doesn't fire on nil assignments unless the index doesn't exist, so it seems you'd have to funnel entry removal through a special function.
– ergosys
Apr 26 '10 at 4:43
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近期 Chrome 下 Discuz 兼容问题修复记录：AJAX 提交失效与移动链接误跳转 ...
...类等 AJAX 表单提交已恢复正常。
例如访问：
forum.php?mod=viewthread&tid=2865&fromguid=hot&extra=&mobile=2
不会正常回到对应的电脑版帖子地址，而是错误跳转到：
misc.php?mod=mobile
原因：
Discuz 全局移动识别逻辑里，当请求...
What is copy-on-write?
...gy used in computer programming. The fundamental idea is that if multiple callers ask for resources which are initially indistinguishable, you can give them pointers to the same resource. This function can be maintained until a caller tries to modify its "copy" of the resource, at which point a true...