extract is_alpha to string.hh

1 files changed, 8 insertions, 0 deletions

diff --git a/src/string.hh b/src/string.hh
index 8676c5da..2e8172c1 100644
--- a/src/string.hh
+++ b/src/string.hh
@@ -119,6 +119,14 @@ String int_to_str(int value);
 int    str_to_int(const String& str);
 std::vector<String> split(const String& str, Character separator);
 
+inline bool is_word(Character c)
+{
+    return (c >= '0' and c <= '9') or
+           (c >= 'a' and c <= 'z') or
+           (c >= 'A' and c <= 'Z') or
+           c == '_';
+}
+
 }
 
 namespace std