Just another update

Task/Character-codes/00DESCRIPTION

@@ -1 +1,5 @@
-Given a character value in your language, print its code (could be ASCII code, Unicode code, or whatever your language uses). For example, the character 'a' (lowercase letter A) has a code of 97 in ASCII (as well as Unicode, as ASCII forms the beginning of Unicode). Conversely, given a code, print out the corresponding character.
+Given a character value in your language, print its code (could be ASCII code, Unicode code, or whatever your language uses).
+
+For example, the character 'a' (lowercase letter A) has a code of 97 in ASCII (as well as Unicode, as ASCII forms the beginning of Unicode).
+
+Conversely, given a code, print out the corresponding character.

Task/Character-codes/00META.yaml

@@ -2,4 +2,5 @@
 category:
 - Basic language learning
 - String manipulation
+- Simple
 note: Text processing

Task/Character-codes/Babel/character-codes-1.pb

@@ -0,0 +1,2 @@
+'abcdefg' str2ar
+{%d nl <<} eachar

Task/Character-codes/Babel/character-codes-2.pb

@@ -0,0 +1 @@
+(98 97 98 101 108) ls2lf ar2str nl <<

Task/Character-codes/D/character-codes.d

@@ -1,13 +1,12 @@
-import std.stdio, std.utf;
-
 void main() {
+    import std.stdio, std.utf;
+
     string test = "a";
     size_t index = 0;
 
-    // Get four-byte utf32 value for index 0
-    // this returns dchar, so cast it to numeric.
-    writeln(cast(uint)test.decode(index));
+    // Get four-byte utf32 value for index 0.
+    writefln("%d", test.decode(index));
 
-    // 'index' has moved to next character position in input.
+    // 'index' has moved to next character input position.
     assert(index == 1);
 }

Task/Character-codes/Eiffel/character-codes.e

@@ -0,0 +1,28 @@
+class
+	APPLICATION
+inherit
+	ARGUMENTS
+create
+	make
+
+feature {NONE} -- Initialization
+
+	make
+			-- Run application.
+		local
+			c8: CHARACTER_8
+			c32: CHARACTER_32
+		do
+			c8 := '%/97/'			-- using code value notation
+			c8 := '%/0x61/'			-- same as above, but using hexadecimal literal
+			print(c8.natural_32_code)	-- prints "97"
+			print(c8)			-- prints the character "a"
+			
+			c32 := 'a'			-- using character literal
+			print(c32.natural_32_code)	-- prints "97"
+			print(c32)			-- prints "U+00000061"
+
+			--c8 := 'π'			-- compile-time error (c8 does not have enough range)
+			c32 := 'π'			-- assigns Unicode value 960
+		end
+end

Task/Character-codes/Elena/character-codes.elena

@@ -3,5 +3,5 @@
 #symbol Program =>
 [
     console write:("a" getAt:0 Number).
-    console write:(CharValue new:97).
+    console write:(CharValue new &short:97).
 ].

Task/Character-codes/Frink/character-codes.frink

@@ -1,4 +1,5 @@
 println[char["a"]]              // prints 97
+println[chars["a"]]             // prints [97] (an array)
 println[char[97]]               // prints a
 println[char["Frink rules!"]]   // prints [70, 114, 105, 110, 107, 32, 114, 117, 108, 101, 115, 33]
 println[[70, 114, 105, 110, 107, 32, 114, 117, 108, 101, 115, 33]]  // prints "Frink rules!"

Task/Character-codes/Go/character-codes-2.go

@@ -3,14 +3,19 @@ package main
 import "fmt"
 
 func main() {
-    // yes, there is more concise syntax, but this makes
-    // the data types very clear.
-    var b byte = 'a'
-    var r rune = 'π'
-    var s string = "aπ"
+	// yes, there is more concise syntax, but this makes
+	// the data types very clear.
+	var b byte = 'a'
+	var r rune = 'π'
+	var s string = "aπ"
 
-    fmt.Println(b, r, s)
-    for _, c := range s { // this gives c the type rune
-        fmt.Println(c)
-    }
+	fmt.Println(b, r, s)
+	fmt.Println("string cast to []rune:", []rune(s))
+	// A range loop over a string gives runes, not bytes
+	fmt.Print("    string range loop: ")
+	for _, c := range s {
+		fmt.Print(c, " ") // c is type rune
+	}
+	// We can also print the bytes of a string without an explicit loop
+	fmt.Printf("\n         string bytes: % #x\n", s)
 }

Task/Character-codes/JavaScript/character-codes.js

@@ -1,2 +1,2 @@
-document.write('a'.charCodeAt(0)); // prints "97"
-document.write(String.fromCharCode(97)); // prints "a"
+console.log('a'.charCodeAt(0)); // prints "97"
+console.log(String.fromCharCode(97)); // prints "a"

Task/Character-codes/Vim-Script/character-codes.vim

@@ -0,0 +1,6 @@
+"encoding is set to utf-8
+echo char2nr("a")
+"Prints 97
+
+echo nr2char(97)
+"Prints a