gsub

I have the following vector: x <- c(11, 12, 21, 22) And I want to convert it to the corresponding letters, i.e., I want to get this result: AA AB BA BB How do I make this? I bet there's a simple answer and that it goes through using the reserved LETTERS vector, but I can't figure out a solution. This is the best I've managed to come up with so far (you might want to take the kids out of the room): > paste0(gsub(1, LETTERS[1], substr(x, 1, 1)), gsub(2, LETTERS[2], substr(x, 1, 1))) [1] "A1" "A1" "2B" "2B" Since this just involves one-to-one character substitution, it might be simplest to just

I need to match a line in an inputted text file string and wrap that captured line with a character for example. For example imagine a text file as such: test foo test bar I would like to use gsub to output: XtestX XfooX XtestX XbarX I'm having trouble matching a line though. I've tried using regex starting with ^ and ending with $, but it doesn't seem to work. Any ideas? I have a text file that has the following in it: test foo test bag The text file is being read in as a command line argument. So I got string = IO.read(ARGV[0]) string = string.gsub(/^(test)$/,'X\1X') puts string It outputs

I was wondering if there is a simple way to do every combination of selected character substitutions in ruby in a simple way. An example: string = "this is a test" subs = ['a'=>'@','i'=>'!','s'=>'$'] subs.combination.each { |c| string.gsub c } would yield "this is @ test" "th!s !s a test" "thi$ i$ a te$t" "th!s !s @ test" "thi$ i$ @ te$t" "th!$ !$ a te$t" "th!$ !$ @ te$t" Thanks for the help! string = "this is a test" subs = ['a'=>'@','i'=>'!','s'=>'$'] subs = subs.first.map(&:to_a) 1.upto(subs.length).each do |n| subs.combination(n).each do |a| p a.each_with_object(string.dup){|pair, s| s

I have two strings - each string has many lines like the following: value_1 = "DEFAULT-VLAN" value_2 = "WAN" data = "HOSTNAME = DEFAULT-VLAN" result = string.gsub(data,value_1,value_2) print(result) Result: data = "HOSTNAME = DEFAULT-VLAN" When the hyphen ("-") is deleted from the value it is working. Is there an easy way to solve this? Thanks! - is a magic character in Lua patterns. You need to escape it. Change value_1 = "DEFAULT-VLAN" to: value_1 = "DEFAULT%-VLAN" This is because string.gsub takes a pattern similar to Regex—it does not do a "literal" replacement; this means you need to

(I'm using R.) For a list of words that's called "goodwords.corpus", I am looping through the documents in a corpus, and replacing each of the words on the list "goodwords.corpus" with the word + a number. So for example if the word "good" is on the list, and "goodnight" is NOT on the list, then this document: I am having a good time goodnight would turn into: I am having a good 1234 time goodnight **I'm using this code (EDIT- made this reproducible): goodwords.corpus <- c("good") test <- "I am having a good time goodnight" for (i in 1:length(goodwords.corpus)){ test <-gsub(goodwords.corpus[[i

I have a character vector d with alphanumeric characters d <- c("012309 template", "separate 00340", "00045", "890 098", "3405 garage", "matter00908") d [1] "012309 template" "separate 00340" "00045" "890 098" "3405 garage" "matter00908" How can I remove the leading zeros from all the numbers in R? as.numeric will remove all leading zeros only in numeric or integer vectors. I have tried gsub with regex but could not get the desired results. The expected output is as follows out <- c("12309 template", "seperate 340", "45", "890 98", "3405 garage", "matter908") out [1] "12309 template" "seperate