大约有 8,100 项符合查询结果(耗时:0.0247秒) [XML]

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How can I plot with 2 different y-axes?

I would like superimpose two scatter plots in R so that each set of points has its own (different) y-axis (i.e., in positions 2 and 4 on the figure) but the points appear superimposed on the same figure. ...
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Python, remove all non-alphabet chars from string

I am writing a python MapReduce word count program. Problem is that there are many non-alphabet chars strewn about in the data, I have found this post Stripping everything but alphanumeric chars from a string in Python which shows a nice solution using regex, but I am not sure how to implement it ...
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Paging with Oracle

I am not as familiar with Oracle as I would like to be. I have some 250k records, and I want to display them 100 per page. Currently I have one stored procedure which retrieves all quarter of a million records to a dataset using a data adapter, and dataset, and the dataadapter.Fill(dataset) method...
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Python Progress Bar

How do I use a progress bar when my script is doing some task that is likely to take time? 33 Answers ...
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How to convert an int array to String with toString method in Java [duplicate]

I am using trying to use the toString(int[]) method, but I think I am doing it wrong: 8 Answers ...
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Error on pod install

I have a working project the uses a pod file for some weeks now. When I learned that some of my pods have update I tried to 'pod install' on got this weird error ...
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Reading a huge .csv file

I'm currently trying to read data from .csv files in Python 2.7 with up to 1 million rows, and 200 columns (files range from 100mb to 1.6gb). I can do this (very slowly) for the files with under 300,000 rows, but once I go above that I get memory errors. My code looks like this: ...
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Android add placeholder text to EditText

How can I add a placeholder text to EditText in the class that isn't in the XML? 8 Answers ...
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How to get Spinner value?

In Android, I am trying to get the selected Spinner value with a listener. 7 Answers 7...
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How do I see the extensions loaded by PHP?

It's got to be somewhere in the phpinfo() dump, but I just don't know where. Is it supposed to be under the "Additional Modules" section? Somewhere else? I'm trying to figure out why some extensions don't appear to be loaded, but I don't even know where I should be looking. ...