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Big O, how do you calculate/approximate it?
Most people with a degree in CS will certainly know what Big O stands for .
It helps us to measure how well an algorithm scales.
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Saving enum from select in Rails 4.1
I am using the enums in Rails 4.1 to keep track of colors of wine.
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Differences between action and actionListener
What is the difference between action and actionListener , and when should I use action versus actionListener ?
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Mapping over values in a python dictionary
Given a dictionary { k1: v1, k2: v2 ... } I want to get { k1: f(v1), k2: f(v2) ... } provided I pass a function f .
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How do I check if a file exists in Java?
The only similar question on SO deals with writing the file and was thus answered using FileWriter which is obviously not applicable here.
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Calculating frames per second in a game
What's a good algorithm for calculating frames per second in a game? I want to show it as a number in the corner of the screen. If I just look at how long it took to render the last frame the number changes too fast.
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Assign output of a program to a variable using a MS batch file
I need to assign the output of a program to a variable using a MS batch file.
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How can I use “:” as an AWK field separator?
Given the following command,
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How to find encoding of a file via script on Linux?
I need to find the encoding of all files that are placed in a directory. Is there a way to find the encoding used?
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How do I tell if a regular file does not exist in Bash?
I've used the following script to see if a file exists:
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