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Best way to concatenate List of String objects? [duplicate]
What is the best way to concatenate a list of String objects? I am thinking of doing this way:
19 Answers
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How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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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
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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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