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Diffstat (limited to 'README.EXT')
| -rw-r--r-- | README.EXT | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/README.EXT b/README.EXT index 9a6eeb0d04..a0e7a38904 100644 --- a/README.EXT +++ b/README.EXT @@ -442,11 +442,19 @@ or You can get the ID value from a string within C code by using rb_intern(const char *name) + rb_intern_str(VALUE name) You can retrieve ID from Ruby object (Symbol or String) given as an argument by using rb_to_id(VALUE symbol) + rb_check_id(volatile VALUE *name) + +These functions try to convert the argument to a String if it was not +a Symbol nor a String. The latter function stores the converted +result into *name, and returns 0 if the string is not a known symbol. +After this function returned a non-zero value, *name is always a +Symbol or a String, otherwise it is a String if the result is 0. You can convert C ID to Ruby Symbol by using |