大约有 13,906 项符合查询结果(耗时:0.0221秒) [XML]

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Linq style “For Each” [duplicate]

Is there any Linq style syntax for "For each" operations? 6 Answers 6 ...
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finding and replacing elements in a list

... edited Jan 31 '18 at 13:46 Maximilian Peters 21.7k77 gold badges5353 silver badges7070 bronze badges answered Apr 6 '10 at 1:41 ...
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How to crop an image in OpenCV using Python

...y slicing. import cv2 img = cv2.imread("lenna.png") crop_img = img[y:y+h, x:x+w] cv2.imshow("cropped", crop_img) cv2.waitKey(0) share | improve this answer | follow ...
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Annotating text on individual facet in ggplot2

I want to annotate some text on last facet of the plot with the following code: 6 Answers ...
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Build an ASCII chart of the most commonly used words in a given text [closed]

Build an ASCII chart of the most commonly used words in a given text. 59 Answers 59 ...
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Ternary Operator Similar To ?:

...lue a good pattern? to get scala> "Hi".getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x} res0: String = String scala> List.getClass.getSimpleName |> {x => x.endsWith("$") ? x.init | x} res1: String = List Is this adequate for your needs? ...
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Node.js + Nginx - What now?

I've set up Node.js and Nginx on my server. Now I want to use it, but, before I start there are 2 questions: 12 Answers ...
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Maximum size of a element

I'm working with a canvas element with a height of 600 to 1000 pixels and a width of several tens or hundreds of thousands of pixels. However, after a certain number of pixels (obviously unknown), the canvas no longer display shapes I draw with JS. ...
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Apply pandas function to column to create multiple new columns?

...swer, you can do the assignment in one pass using df.merge: df.merge(df.textcol.apply(lambda s: pd.Series({'feature1':s+1, 'feature2':s-1})), left_index=True, right_index=True) textcol feature1 feature2 0 0.772692 1.772692 -0.227308 1 0.857210 1.857210 -0.142790 2 0.065639 1.06563...
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Fast Bitmap Blur For Android SDK

...ly in an Android application that I'm developing I'm looping through the pixels of an image to blur it. This takes about 30 seconds on a 640x480 image. ...