diff options
Diffstat (limited to 'doc/extension.rdoc')
| -rw-r--r-- | doc/extension.rdoc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/extension.rdoc b/doc/extension.rdoc index b7cba0d5e8..1355cdae64 100644 --- a/doc/extension.rdoc +++ b/doc/extension.rdoc @@ -279,6 +279,14 @@ rb_str_set_len(VALUE str, long len) :: up to len bytes, regardless RSTRING_LEN(str). len must not exceed the capacity of str. +rb_str_modify(VALUE str) :: + + Prepares a Ruby string to modify. If str is not modifiable, this + function raises an exception, or if the buffer of str is shared, + this function allocates new buffer to make it unshared. Always + you MUST call this function before modifying the contents using + RSTRING_PTR and/or rb_str_set_len. + ==== Array Functions rb_ary_new() :: |