The DString is a data type defined in the Tcl C library. It is similar to a C string, but it can dynamically (hence the D) grow to be as large as it needs to be. Using DStrings thus avoids a lot of risks for buffer overflow that plauge many "ordinary" C programs.

[[Guess by a newcomener: DStrings used to be the main workhorses in Tcl before the introduction of [Tcl_Obj]s, and thus have a bunch of features for constructing DStrings with list structure. These features are not so interesting now, but DStrings remain useful for constructing complex strings of other sorts (e.g. error messages).]]

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[Category Tcl Library]
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