大约有 30,000 项符合查询结果(耗时:0.0433秒) [XML]

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GroupBy pandas DataFra<em>mem>e and select <em>mem>ost co<em>mem><em>mem>on value

I have a data fra<em>mem>e with three string colu<em>mem>ns. I know that the only one value in the 3rd colu<em>mem>n is valid for every co<em>mem>bination of the first two. To clean the data I have to group by data fra<em>mem>e by first two colu<em>mem>ns and select <em>mem>ost co<em>mem><em>mem>on value of the third colu<em>mem>n for each co<em>mem>bination. ...
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Re<em>mem>ove a file fro<em>mem> a Git repository without deleting it fro<em>mem> the local filesyste<em>mem>

<em>Mem>y initial co<em>mem><em>mem>it contained so<em>mem>e log files. I've added *log to <em>mem>y .gitignore , and now I want to re<em>mem>ove the log files fro<em>mem> <em>mem>y repository. ...
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JavaScript “new Array(n)” and “Array.prototype.<em>mem>ap” weirdness

... It appears that the first exa<em>mem>ple x = new Array(3); Creates an array with undefined pointers. And the second creates an array with pointers to 3 undefined objects, in this case the pointers the<em>mem> self are NOT undefined, only the objects they point to....
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iOS 6 apps - how to deal with iPhone 5 screen size? [duplicate]

... All apps will continue to work in the vertically stretched screen fro<em>mem> what I could tell in today's presentation. They will be letterboxed or basically the extra 88 points in height would si<em>mem>ply be black. If you only plan to support iOS 6+, then definitely consider using Auto Layout. It re<em>mem>ov...
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What are the differences between json and si<em>mem>plejson Python <em>mem>odules?

I have seen <em>mem>any projects using si<em>mem>plejson <em>mem>odule instead of json <em>mem>odule fro<em>mem> the Standard Library. Also, there are <em>mem>any different si<em>mem>plejson <em>mem>odules. Why would use these alternatives, instead of the one in the Standard Library? ...
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python date of the previous <em>mem>onth

I a<em>mem> trying to get the date of the previous <em>mem>onth with python. Here is what i've tried: 12 Answers ...
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Changing the default folder in E<em>mem>acs

I a<em>mem> fairly new to E<em>mem>acs and I have been trying to figure out how to change the default folder for C-x C-f on start-up. For instance when I first load E<em>mem>acs and hit C-x C-f its default folder is C:\e<em>mem>acs\e<em>mem>acs-21.3\bin , but I would rather it be the desktop. I believe there is so<em>mem>e way to custo...
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Draw <em>mem>ulti-line text to Canvas

A hopefully quick question, but I can't see<em>mem> to find any exa<em>mem>ples... I'd like to write <em>mem>ulti-line text to a custo<em>mem> View via a Canvas , and in onDraw() I have: ...
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WPF: Grid with colu<em>mem>n/row <em>mem>argin/padding?

Is it easily possible to specify a <em>mem>argin and/or padding for rows or colu<em>mem>ns in a WPF Grid? 15 Answers ...
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Handler vs AsyncTask vs Thread [closed]

...t: The Handler class can be used to register to a thread and provides a si<em>mem>ple channel to send data to this thread. The AsyncTask class encapsulates the creation of a background process and the synchronization with the <em>mem>ain thread. It also supports reporting progress of the running tasks. And a T...