Processing a String One Character at a Time

(For all intents and purposes, this project is dead, but let us just call it "Deferred Indefinitely". Shall we?)

Problem

You need to iterate over every character in a string.

Solution

Use the each_byte string iterator:

aString.each_byte {
  |c|
  # do something with c
}

Discussion

Strings are enumerable. This means that you have a number of predefined methods for enumerating or iterating over each element of the collection. each_byte is a specialization of the String#each which allows you to specify your separator so you can iterate over characters, words, sentances or whatever.

Contrast

perl: foreach (split //, $str) { ... }
python: TODO
c: int max = strlen(s); for (int i=0; i<max; ++i) { char c = s[i]; ... }

String#each
Enumerable

Status: In Progress

Processing a String One Character at a Time

Problem

Solution

Discussion

Contrast

Related