Test for numeric elements in a character string

by

More Related Contents:

  1. How do I deal with special characters like \^$.?*|+()[{ in my regex?
  2. How to calculate the number of occurrence of a given character in each row of a column of strings?
  3. Extracting a string between other two strings in R
  4. Replace single backslash in R
  5. Extract a substring according to a pattern
  6. Extract a regular expression match
  7. Remove all special characters from a string in R?
  8. Why does strsplit use positive lookahead and lookbehind assertion matches differently?
  9. Create new column in dataframe based on partial string matching other column
  10. Remove all text between two brackets
  11. R – gsub replacing backslashes
  12. R/regex with stringi/ICU: why is a ‘+’ considered a non-[:punct:] character?
  13. Remove numbers from alphanumeric characters
  14. Convert dd/mm/yy and dd/mm/yyyy to Dates
  15. Why is this regex using lookbehinds invalid in R?
  16. Select rows from data.frame ending with a specific character string in R
  17. Use gsub remove all string before first white space in R
  18. Why can’t you use repetition quantifiers in zero-width look behind assertions?
  19. Complete word matching using grepl in R
  20. Find the location of a character in string
  21. Is there an R function to escape a string for regex characters
  22. regex for preserving case pattern, capitalization
  23. Overlapping matches in R
  24. Extract a string between patterns/delimiters in R
  25. Regex return file name, remove path and file extension
  26. Remove all characters before a period in a string
  27. Replace first occurrence of “:” but not second in R
  28. Extract last 4-digit number from a series in R using stringr
  29. Get Twitter @Username with Regex in R
  30. How to measure similarity between strings?

Leave a Comment