大约有 14,400 项符合查询结果（耗时：0.0202秒） [XML]
Vim 80 column layout concerns
The way I do 80-column indication in Vim seems incorrect: set columns=80 .
At times I also set textwidth , but I want to be able to see and anticipate line overflow with the set columns alternative.
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Fetch frame count with ffmpeg
Does anyone know how to fetch the number of total frames from a video file using ffmpeg? The render output of ffmpeg shows the current frame and I need the frame count to calculate the progress in percent.
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Python's json module, converts int dictionary keys to strings
I have found that when the following is run, python's json module (included since 2.6) converts int dictionary keys to strings.
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Does Java have a HashMap with reverse lookup?
I have data that is organized in kind of a "key-key" format, rather than "key-value". It's like a HashMap, but I will need O(1) lookup in both directions. Is there a name for this type of data structure, and is anything like this included in Java's standard libraries? (or maybe Apache Commons?)
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What is the real overhead of try/catch in C#?
So, I know that try/catch does add some overhead and therefore isn't a good way of controlling process flow, but where does this overhead come from and what is it's actual impact?
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What are the GCC default include directories?
When I compile a very simple source file with gcc I don't have to specify the path to standard include files such as stdio or stdlib.
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JSON datetime between Python and JavaScript
...e object in serialized form from Python using JSON and de-serialize in JavaScript using JSON. What is the best way to do this?
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Check if a program exists from a Makefile
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How to set up tmux so that it starts up with specified windows opened?
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How to hide one item in an Android Spinner
...cted, and ensures that the onItemSelected() callback is always called for every item selected (if the hidden item is the "current" one). Normally there is always one item in the spinner that doesn't generate a callback, namely the current one.
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