大约有 47,000 项符合查询结果(耗时:0.0546秒) [XML]

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Trying to understand CMTime and CMTimeMake

1) CMTimeMake(1,10) means duration of 1 second and timescale of 10, or 10 frames per second. This means 1s duration of video with 10 frames? ...
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How can I format a decimal to always show 2 decimal places?

I want to display: 12 Answers 12 ...
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Remove duplicate entries using a Bash script [duplicate]

I want to remove duplicate entries from a text file, e.g: 4 Answers 4 ...
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How do I find the number of arguments passed to a Bash script?

How do I find the number of arguments passed to a Bash script? 5 Answers 5 ...
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How do I convert a string to a double in Python?

I would like to know how to convert a string containing digits to a double. 3 Answers ...
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Numpy how to iterate over columns of array?

Suppose I have and m x n array. I want to pass each column of this array to a function to perform some operation on the entire column. How do I iterate over the columns of the array? ...
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What is the most efficient way to create a dictionary of two pandas Dataframe columns?

What is the most efficient way to organise the following pandas Dataframe: 4 Answers 4...
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How to calculate moving average using NumPy?

There seems to be no function that simply calculates the moving average on numpy/scipy, leading to convoluted solutions . ...
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iterating over each character of a String in ruby 1.8.6 (each_char)

I am new to ruby and currently trying to operate on each character separately from a base String in ruby. I am using ruby 1.8.6 and would like to do something like: ...
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How to remove an element from a list by index

How do I remove an element from a list by index in Python? 18 Answers 18 ...