In extended object Tcl, classes are objects as well (objects with certain properties; we will come to this later in more @@ -3057,7 +3055,7 @@ className info instmixin ?className2?
-It returns the list of all instmixins of the the class, if className2 +It returns the list of all instmixins of the class, if className2 is not specified, otherwise it returns 1, if className2 is a mixin of the object, or 0 if not.
@@ -3691,7 +3689,7 @@ Person slot projects -This object structure can be used to to query and modify the slot +
This object structure can be used to query and modify the slot properties or to add additional methods to the slot objects. One application is for example to used slot-specific methods for checking slot values, as shown in the next section. @@ -3773,8 +3771,7 @@
For the most common simple cases with single valued attributes, where neither setter or getter are redefined, XOTcl optimizes the slot -access function and replaces the delegation to the slot object by the -the C-level implementation of instparametercmd. +access function and replaces the delegation to the slot object by the C-level implementation of instparametercmd.
Note that it is possible to subclass Attribute (e.g. in order to store more properties for attributes, like when attributes @@ -3931,7 +3928,7 @@
The initcmd is executed only once, when the variable is read the first time. For later reads of the variable contents, the values are returned. -
A value command (valuecmd) of a slot is similar to a a +
A value command (valuecmd) of a slot is similar to a init command, except that it is executed whenever the value of the variable is read. A value command can be used e.g. to implement live updates for variables or for abstracting from sql sequences or the @@ -4226,7 +4223,7 @@ method should be prefixed with the specified string (to avoid name clashes), -earlybinding means that the function pointer of the specified command (callee) is take at invocation time (should only -be done for (builtin) commands inplemented in C), and +be done for (built-in) commands inplemented in C), and -default provides a means for providing default methods when none are specified.
@@ -4446,8 +4443,7 @@The following examples show a few usages of the positional arguments in the forwarder. The forwarders f1 to f5 are created, followed by -one or more usages. The first argument of the usage is the call to -to forewarder, the second argument is the result. +one or more usages. The first argument of the usage is the call to forewarder, the second argument is the result.
########################################### @@ -4920,7 +4916,7 @@ the current namespace because there are no name-clashes with the commands defined by other extensions. -Consider you want to perform a deeper integration of an other +
Consider you want to perform a deeper integration of another extension and XOTcl because you want to benefit from XOTcl's object system. For instance, you might want to introduce composite TK widgets (sometimes called mega-widgets) as classes and inherit from these