How to extract everything until first occurrence of pattern

by

Related Contents:

  1. gsub() in R is not replacing ‘.’ (dot)
  2. How do I match any character across multiple lines in a regular expression?
  3. Test if characters are in a string
  4. Replace specific characters within strings
  5. How to remove all whitespace from a string?
  6. grep using a character vector with multiple patterns
  7. Selecting data frame rows based on partial string match in a column
  8. Remove part of a string
  9. Select columns based on string match – dplyr::select
  10. Remove part of string after “.”
  11. Why is `vapply` safer than `sapply`?
  12. How to use grep()/gsub() to find exact match
  13. Replace multiple letters with accents with gsub
  14. Extracting a string between other two strings in R
  15. remove all line breaks (enter symbols) from the string using R
  16. Remove parentheses and text within from strings in R
  17. select columns based on multiple strings with dplyr contains()
  18. R:how to get grep to return the match, rather than the whole string
  19. How to ignore case when using str_detect?
  20. Using regex in R to find strings as whole words (but not strings as part of words)
  21. Check existence of directory and create if doesn’t exist
  22. How to use a variable to specify column name in ggplot
  23. R: removing NULL elements from a list
  24. Select / assign to data.table when variable names are stored in a character vector
  25. What does “The following object is masked from ‘package:xxx'” mean?
  26. Advantages of reactive vs. observe vs. observeEvent
  27. dplyr change many data types
  28. Error: package or namespace load failed for ggplot2 and for data.table
  29. How to get row index number in R?
  30. How to put labels over geom_bar in R with ggplot2
  31. How to find the highest value of a column in a data frame in R?
  32. Define dimensions of an empty dataframe
  33. Extract file extension from file path
  34. calculating number of days between 2 columns of dates in data frame
  35. Reset the graphical parameters back to default values without use of dev.off()
  36. Error: unexpected symbol/input/string constant/numeric constant/SPECIAL in my code
  37. Assigning NULL to a list element in R?
  38. R ggplot2 legend inside the figure
  39. Subset with unique cases, based on multiple columns
  40. Displaying a greater than or equal sign
  41. How to check existence of an input argument for R functions
  42. How to Convert data frame to spatial coordinates
  43. Set number of columns (or rows) in a facetted plot
  44. Update a specific R package and its dependencies
  45. Count NAs per row in dataframe [duplicate]
  46. Generate a sequence of characters from ‘A’-‘Z’
  47. Getting a row from a data frame as a vector in R
  48. R 3.4.1 “Single Candle” Personal Library Path Error: unable to create ‘NA’
  49. In R, what is the difference between unlink and file.remove?
  50. Convert character matrix into numeric matrix

Leave a Comment