ruby Namespace

ruby:: Namespace

12 Ruby-style string and array operations: character transliteration, consecutive duplicate squeezing, character splitting, array rotation, and more.

See also: Namespaces Overview | Other namespaces

String Functions

Function	Description	Example
squeeze(str)	Collapse consecutive duplicate chars	ruby::squeeze(s) — "aaabbc" → "abc"
tr(str, from, to)	Transliterate characters	ruby::tr(s, "aeiou", "*") — "hello" → "h*ll*"
capitalize(str)	Uppercase first, lowercase rest	ruby::capitalize(s) — "hELLO" → "Hello"
delete(str, chars)	Remove all specified characters	ruby::delete(s, "lo") — "hello" → "he"
count(str, chars)	Count occurrences of any listed char	n = ruby::count(s, "aeiou")
include(str, substr)	Check if string contains substr	if ( ruby::include(s, "world") )
gsub(str, pattern, repl)	Global substitution (all matches)	ruby::gsub(s, "foo", "bar")
sub(str, pattern, repl)	Substitute first occurrence only	ruby::sub(s, "foo", "bar")

Array Functions

Function	Description	Example
chars(arr, str)	Split string into individual chars	ruby::chars(a, "hello")
rotate(arr, n)	Rotate elements by n positions	ruby::rotate(a, 2) — [a,b,c,d] → [c,d,a,b]
compact(arr)	Remove empty string entries	ruby::compact(a)
flatten(arr, str)	Split string by whitespace into array	ruby::flatten(a, "one two three")

Example

#include <iostream>

int main()
{
    // transliterate vowels to numbers
    string s = "hello world";
    string from = "aeiou";
    string to = "12345";
    ruby::tr(s, from, to);
    cout << s << endl;          // h2ll4 w4rld

    // squeeze repeated chars
    string dups = "aabbccddee";
    ruby::squeeze(dups);
    cout << dups << endl;       // abcde

    // split into chars and rotate
    array chars;
    ruby::chars(chars, "abcde");
    ruby::rotate(chars, 2);
    string result;
    string empty = "";
    php::implode(result, empty, chars);
    cout << result << endl;     // cdeab

    return 0;
}

← Back to Namespaces | ← Back to Home