GKi

Questions Linux Laravel Mysql Ubuntu Git Menu

HTML CSS JAVASCRIPT SQL PYTHON PHP BOOTSTRAP JAVA JQUERY R React Kotlin

GKi has asked 16 questions and find answers to 196 problems.

Stats

About

GKi questions

What are the disadvantages when using a function without empty parentheses with %>%, the pipe of magrittr?
Write own / custom pipe operator
Argument names of Arithmetic Operators
What is the reason not to use string quotes for syntactic names?
Same function but using for it the name %>% causes a different result compared when using the name :=
Recommended way to subset two vectors with the same index vector
Does the Bizarro pipe ->.; have disadvantages making it not recommended for use?
Why is R making a copy-on-modification after using str?

GKi answers

replace numeric(0) with 0 in R list
Find all column names where any specified row will have the cell value of 1
How to transform "X hours/days ago" into standard date time
Replicate some rows in R, keeping some values constant and changing others
subset dataframe based on hierarchical preference of factor levels within column in R
More efficient way to get a data matrix based on some value and index matrices in R?
Create a matrix from a vector and flipping it using base pipe
Sum the last n non NA values in each column of a matrix in R
I have two vectors of indices (rows, columns) for a data.frame with corresponding values, whats the fastest way to build the new data.frame?
Count number of rows where a value appears in any of two columns in R