Feather: Teaching Tcl Objects to Fly

Experience with SAND-Tcl: a scripting tool for spatial databases

The use of scripting makes it possible to overcome many important difficulties in the development of database applications. By extending a general-purpose scripting language with constructs derived both from the database kernel and from the intended application domain, issues such as query processing and user interfacing can be approached in an economical and flexible way. This is illustrated b...

Interpreted C++, Object Oriented Tcl, What next?

Tcl[1] is an interpreted high level language suitable for scripts, small scale systems, prototypes and embedding in larger applications. C++ is a powerful compiled language that provides support for object oriented programming and is suitable for building large complex systems. But what if you could move from C++ to Tcl and back again with the ease of an object reference and a dynamically bound...

Iclient/Iserver: Distributed Objects using [incr Tcl]

Data Objects

Scripting languages are great for gluing together components, but they suffer as the complexity or size of data scales upward. Data objects solve this problem by marrying both high-level and low-level programming styles. Data objects are self-contained representations of data. They define both the structure of the data and the methods to access it. Data may be accessed through both Tcl and a C ...

Extending Traces with OAT: An Object Attribute Trace Package for Tcl/Tk

Tcl supports variable traces, which associate arbitrary scripts with variable reads, writes and unsets. We developed OAT (Object Attribute Traces), a protocol for extending traces to attributes of arbitrary Tcl “objects.” We wrote several OAT-based extensions including TkOAT, which provides traces on attributes of Tk widgets and canvas items. The OAT protocol and derived extensions bring the be...