Suppose you have a character string "The Big Dog" and you would like to remove all characters that lie between the blanks (white spaces), so you end up with "The Dog". Note that in the actual code the "Big" is dynamic and the string between the white spaces can be formed by different sequences of… Read More How to remove all characters that lie between blanks (white spaces) in R string?
I am trying to convert strings to double with std::from_chars, but I cannot get alignment with strtod when it comes to exponential numbers. The reproducer: #include <string> #include <iostream> #include <charconv> void xxx(std::string const A){ double x; std::from_chars(&A[0],&A.back(),x,std::chars_format::scientific); printf("%s,%.17g\n",A.c_str(),x); } void yyy(std::string const A){ printf("%s,%.17g\n",A.c_str(),strtod(&A[0],NULL)); } int main(){ xxx(std::string("0.9226e-01")); yyy(std::string("0.9226e-01")); xxx(std::string("0.9226e-10")); yyy(std::string("0.9226e-10")); } which produces… Read More C++ std::from_chars is ignoring expontens <10
I want to remove the underscore "_" from the column entries of col1 only when the underscore is the last character. Example: data1 <- c("foo_bar_","bar_foo","apple_","apple__beer_") df <- data.frame("col1"=data1,"col2"=1:4) df col1 col2 foo_bar_ 1 bar_foo 2 apple_ 3 apple__beer_ 4 Desired output: col1 col2 foo_bar 1 bar_foo 2 apple 3 apple__beer 4 Thank you in advance… Read More Update column entries to remove the last character if it's an underscore
I have this dataframe that I applied ifelse function and startsWith function df = data.frame(x = c(‘part1′,letters[1:3],’part2′,letters[5:6])) y = 5:6 df$y = ifelse(startsWith(df$x,’part’),y,NA) df However the output is x y 1 part1 5 2 a NA 3 b NA 4 c NA 5 part2 5 6 e NA 7 f NA The column y includes… Read More How to make a condition that if a value (that is a character) starts with a specific word, then I need to print a vector?
In SQL Server, I am trying to obtain the values between the second and third forward slash (/) character. The length of the numbers can vary so substring(column, 8, 10) wouldn’t work. 123/123/123456789/12 What I am trying to get in the current example is: 123456789 >Solution : With 4 parts to your data as shown… Read More SQL obtain values between second and third forward slash
GOAL: I want to have a regex that searches a string for all capitalized first letters of words/names in a string. Then replace those capitalized words with "Whatever", if the word is 4 or more characters long. String Input: let myString = "This is a regular string. How does this Work? Does any Name know… Read More Swift Regex: How to find all first letter capitalized words in a string? Like a name ("My Name and another His Name")?
I have an array (converted from a string) that contains words with non-standard letters (letters not used in English, like ć, ä, ü). I don’t want to replace those characters, I want to get rid of the whole words that have them. from [Adam-Smith, Christine, Müller, Roger, Hauptstraße, X Æ A-12] to [Adam-Smith, Christine, Roger]… Read More Delete words from an array that are not letters or numbers in php
Let’s say I have the following data frame: #### Library #### library(tidyverse) #### Data Frame #### df <- data.frame(name = c("Paul","Paul","Rich","Rich", "John","John","Frank","Frank"), cookies = c(3,6,4,3, 4,5,6,4), fish = c(2,5,3,3, 4,6,7,3)) Filtering values is normally pretty easy, like so: df %>% filter(cookies < 5, fish == 3) Which gives the following output: name cookies fish 1… Read More How to select range of unique character values in dplyr?
Basically, when trying to get a .csv file into a list using Linq, all characters with diacritics turn into <?> character. What should i do to make the code keep them as in the .csv file? using (StreamReader ctec = new StreamReader(souborovejmeno)) { var lines = File.ReadAllLines(souborovejmeno).Select(a => a.Split(‘\t’)); var csv = from line in… Read More C# Linq doesn't recognize Czech characters while reading from .csv file
I have Pandas DataFrame like below, col1 is STRING data type: col1 —– "123" "1111" "287777" NaN "222" And I need to select only these rows where string in "col1" has 3 characters, so as a result i need something like below: col1: —– "123" "222" How can I do that in Python Pandas? >Solution… Read More How to select only rows from Pandas DataFrame with 3 characters in Python Pandas?