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OnCreateOptionsMenu() not called in Fragment

I have an app which got one activity with 2 fragments placed horizontally. 8 Answers 8...
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MySQL Great Circle Distance (Haversine formula)

I've got a working PHP script that gets Longitude and Latitude values and then inputs them into a MySQL query. I'd like to make it solely MySQL. Here's my current PHP Code: ...
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How do you read a file into a list in Python? [duplicate]

I want to prompt a user for a number of random numbers to be generated and saved to a file. He gave us that part. The part we have to do is to open that file, convert the numbers into a list, then find the mean, standard deviation, etc. without using the easy built-in Python tools. ...
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Why doesn't RecyclerView have onItemClickListener()?

I was exploring RecyclerView and I was surprised to see that RecyclerView does not have onItemClickListener() . 32 Ans...
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Rails 3.1: Engine vs. Mountable App

Can someone help me understand the differences between a Rails Engine and a Mountable app? In Rails 3.1, you can create either one with the "rails new plugin ___ " command. ...
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What is the difference between DSA and RSA?

It appears they are both encryption algorithms that require public and private keys. Why would I pick one versus the other to provide encryption in my client server application? ...
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How can two strings be concatenated?

How can I concatenate (merge, combine) two values? For example I have: 12 Answers 12 ...
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Reasons for using the set.seed function

Many times I have seen the set.seed function in R, before starting the program. I know it's basically used for the random number generation. Is there any specific need to set this? ...
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Haversine Formula in Python (Bearing and Distance between two GPS points)

I would like to know how to get the distance and bearing between 2 GPS points . I have researched on the haversine formula. Someone told me that I could also find the bearing using the same data. ...
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Single script to run in both Windows batch and Linux Bash?

Is it possible to write a single script file which executes in both Windows (treated as .bat) and Linux (via Bash)? 11 Answ...