Category talk:Wren-trait: Difference between revisions
→Source code: Added Const class.
(→Source code: Removed iteration classes following their transfer to Wren-iterate.) |
(→Source code: Added Const class.) |
||
Line 101:
// Returns the string representation of the current instance.
toString { _obj.toString }
/*
Const represents a group of individually named read-only values which are
stored internally in a map. Any attempt to change such a value is ignored
though they can be removed from the map.
*/
class Const {
// Returns the value of 'name' if it is present in the internal map
// or null otherwise.
static [name] { (__cmap && __cmap.containsKey(name)) ? __cmap[name] : null }
// Associates 'value' with 'name' in the internal map.
// If 'name' is already in the map, the change is ignored.
static [name]=(value) {
if (!__cmap) __cmap = {}
if (!__cmap.containsKey(name)) {
__cmap[name] = value
}
}
// Removes 'name' and its associated value from the internal map and returns
// that value. If 'name' was not present in the map, returns null.
static remove(name) { __cmap.remove(name) }
// Returns a list of the entries (name/value pairs) in the internal map.
static entries { __cmap.toList }
}
}</syntaxhighlight>
| |||