大约有 41,731 项符合查询结果(耗时:0.0540秒) [XML]

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Quickly reading very large tables as dataframes

I have very large tables (30 million rows) that I would like to load as a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead o...
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Concrete Javascript Regex for Accented Characters (Diacritics)

I've looked on Stack Overflow ( replacing characters.. eh , how JavaScript doesn't follow the Unicode standard concerning RegExp , etc.) and haven't really found a concrete answer to the question: ...
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How to create a WPF Window without a border that can be resized via a grip only?

If you set ResizeMode="CanResizeWithGrip" on a WPF Window then a resize grip is shown in the lower right corner, as below: ...
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Escaping a forward slash in a regular expression

My question is a simple one, and it is about regular expression escaping. Do you have to escape a forward slash / in a regular expression? And how would you go about doing it? ...
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HTML5 dragleave fired when hovering a child element

The problem I'm having is that the dragleave event of an element is fired when hovering a child element of that element. Also, dragenter is not fired when hovering back the parent element again. ...
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What is SuppressWarnings (“unchecked”) in Java?

Sometime when looking through code, I see many methods specify an annotation: 11 Answers ...
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How to make a query with group_concat in sql server [duplicate]

I know that in sql server we cannot use Group_concat function but here is one issue i have in which i need to Group_Concat my query.I google it found some logic but not able to correct it.My sql query is ...
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Is there an interpreter for C? [closed]

I was wondering if there is something like an interpreter for C. That is, in a Linux terminal I can type in "python" and then code in that interpreter. (I'm not sure interpreter the right word). This is really helpful for testing different things out and I'm curious if something similar exists fo...
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Why does GitHub recommend HTTPS over SSH?

On the GitHub site there is a link... 7 Answers 7 ...
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Original purpose of ? [closed]

I am curious about the original purpose of the <input type="hidden"> tag. 5 Answers ...