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Simultaneously merge multiple data.frames in a list
I have a list of many data.frames that I want to merge. The issue here is that each data.frame differs in terms of the number of rows and columns, but they all share the key variables (which I've called "var1" and "var2" in the code below). If the data.frames were identical in terms of columns, ...
How to read a text file into a string variable and strip newlines?
I use the following code segment to read a file in python:
23 Answers
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Check if an array contains any element of another array in JavaScript
I have a target array ["apple","banana","orange"] , and I want to check if other arrays contain any one of the target array elements.
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swap fragment in an activity via animation
I want to swap two fragment in an activity via animation.Suppose PageA is for fragement A and left side on the screen and PageB is for fragment B i.e. on the right side of the screen. Now i want that when i click a button on pageA then PageA will move to the right side of the screen with some transi...
LogCat message: The Google Play services resources were not found. Check your project configuration
I have an application that uses the Google Maps Android v2 API. I've added the google-play-services_lib library project to my workspace and added a reference to it from my application project, following the instructions on these pages:
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Version number comparison in Python
I want to write a cmp -like function which compares two version numbers and returns -1 , 0 , or 1 based on their compared valuses.
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Adding a newline into a string in C#
I have a string.
12 Answers
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What is the advantage of GCC's __builtin_expect in if else statements?
I came across a #define in which they use __builtin_expect .
6 Answers
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List changes unexpectedly after assignment. How do I clone or copy it to prevent this?
... new_list = my_list , any modifications to new_list changes my_list everytime. Why is this, and how can I clone or copy the list to prevent it?
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Select random lines from a file
In a Bash script, I want to pick out N random lines from input file and output to another file.
4 Answers
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