"quatorze", "quinze", "seize", "dix-sept", "dix-huit", In complement to Tom Nicholson's contribution, here is the french version (actually it's possible to change the language, but you should check the syntax ) ) The function returns '#' if the argument does not represent a whole number.ĥ0 => "fifty", 60 => "sixty", 70 => "seventy", 80 => "eighty" , I haven't bothered with "billion" because the word means 10e9 or 10e12 depending who you ask. I used the floating point fmod() in preference to the % operator, because % converts the operands to int, corrupting values outside of the range 29 -> twenty-nine, then here's a function to do it. toString: Convert an R Object to a Character String Description This is a helper function for format to produce a single character string describing an R object. If you want to convert an integer into an English word string, eg. Check if the next character (if not already at the end of the string) is - or +.Read this character in if it is either. Read in and ignore any leading whitespace. The algorithm for myAtoi(string s) is as follows. Mutate_at(vars(Petal.Length), ~ as.integer(round(.Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search Implement the myAtoi(string s) function, which converts a string to a 32-bit signed integer (similar to C/C++s atoi function). You might want to round your numbers first, then coerce them to integer format, depending on your other goals for this code. Just a heads up, coercing something into an integer drops any decimal values, which is basically like rounding down every value to the nearest (lower) integer. Depending on your goals, you might prefer the more modern way to solve this problem with dplyr: iris2 % You might be interested to know that mutate_at() has been superseded by the more modern mutate(across(.))) approach. Mutate_at(vars(Petal.Length), as.integer) # note the AS.INTERGER() Here is your code with the fix implemented: A technically correct answer iris1 % It's a minor distinction, so it's easy to miss. What you want is as.integer(), which takes an existing numeric vector and coerces each element into an integer. I think the problem you are running into is that integer() creates an integer-typed vector, which is just an empty place-holder for integers to go into.
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