---

yaml
---
r: 14215
b: refs/heads/try
c: 5c58dde
h: refs/heads/master
i:
  14213: 7b43618
  14211: 1517dc9
  14207: f09eb4b
v: v3

Author: killerswan

[refs]

@@ -2,5 +2,5 @@
 refs/heads/master: 61b1875c16de39c166b0f4d54bba19f9c6777d1a
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 4a81779abd786ff22d71434c6d9a5917ea4cdfff
-refs/heads/try: b3444db1614a85afd9f306459595c2870a6b2047
+refs/heads/try: 5c58dde2f84edac1c24d48c050e23278206ac7c1
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105

branches/try/src/libcore/char.rs

@@ -85,10 +85,18 @@ pure fn is_alphanumeric(c: char) -> bool {
         unicode::general_category::No(c);
 }
 
+#[doc( brief = "Indicates whether the character is an ASCII character" )]
 pure fn is_ascii(c: char) -> bool {
    c - ('\x7F' & c) == '\x00'
 }
 
+#[doc( brief = "Indicates whether the character is numeric (Nd, Nl, or No)" )]
+pure fn is_digit(c: char) -> bool {
+    ret unicode::general_category::Nd(c) ||
+        unicode::general_category::Nl(c) ||
+        unicode::general_category::No(c);
+}
+
 #[doc(
   brief = "Convert a char to the corresponding digit. \
            Safety note: This function fails if `c` is not a valid char",
@@ -227,8 +235,18 @@ fn test_to_upper() {
 }
 
 #[test]
-fn test_ascii() unsafe {
+fn test_is_ascii() unsafe {
    assert str::all("banana", char::is_ascii);
    assert ! str::all("ประเทศไทย中华Việt Nam", char::is_ascii);
 }
 
+#[test]
+fn test_is_digit() {
+   assert is_digit('2');
+   assert is_digit('7');
+   assert ! is_digit('c');
+   assert ! is_digit('i');
+   assert ! is_digit('z');
+   assert ! is_digit('Q');
+}
+