diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 31 |
1 files changed, 31 insertions, 0 deletions
@@ -25267,6 +25267,37 @@ but are of a different kind: an instance slot in the supertype can be replaced by a static slot in the derived type or .IR "vice versa" . +Note that, in light of the above type overriding possibility, the static slot +value propagation happens only from the immediate supertype. +If +.code D +is is derived from +.code G +which has a static slot +.codn s , +whereas +.code D +specifies +.code s +as an instance slot, but then +.code B +again specifies a static slot +.codn s , +then +.codn B 's +slot +.code s +will not inherit the value from +.codn G 's +.code s +slot. +Simply, +.codn B 's +supertype is +.code D +and that supertype is not considered to have a static slot +.codn s . + A structure type is associated with a static initialization function which may be used to store initial values into static slots. This function is invoked once in a type's life time, when the type is created. |