大约有 10,170 项符合查询结果(耗时:0.0421秒) [XML]

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jQuery to retrieve and set selected option value of html select element

I am attempting to retrieve and set the selected value of a select element (drop down list) with jQuery. 9 Answers ...
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How to list out all the subviews in a uiviewcontroller in iOS?

I want to list out all the subviews in a UIViewController . I tried self.view.subviews , but not all of the subviews are listed out, for instance, the subviews in the UITableViewCell are not found. Any idea? ...
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Generate fixed length Strings filled with whitespaces

I need to produce fixed length string to generate a character position based file. The missing characters must be filled with space character. ...
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How can I list the contents of a directory in Python?

Can’t be hard, but I’m having a mental block. 8 Answers 8 ...
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Converting Integer to Long

I need to get the value of a field using reflection. It so happens that I am not always sure what the datatype of the field is. For that, and to avoid some code duplication I have created the following method: ...
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cv2.imshow command doesn't work properly in opencv-python

I'm using opencv 2.4.2, python 2.7 The following simple code created a window of the correct name, but its content is just blank and doesn't show the image: ...
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Extracting specific columns in numpy array

This is an easy question but say I have an MxN matrix. All I want to do is extract specific columns and store them in another numpy array but I get invalid syntax errors. Here is the code: ...
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Assign variable value inside if-statement [duplicate]

I was wondering whether it is possible to assign a variable a value inside a conditional operator like so: 9 Answers ...
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Lists: Count vs Count() [duplicate]

Given a list, which method is preferred to determine the number of elements inside? 4 Answers ...
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Verifying that a string contains only letters in C#

I have an input string and I want to verify that it contains: 10 Answers 10 ...