Tk_GetUid - convert from string to unique identifier
#include <tk.h> Tk_Uid Tk_GetUid(string)
Tk_GetUid(3tk) Tk Library Procedures Tk_GetUid(3tk) ______________________________________________________________________________ NAME Tk_GetUid, Tk_Uid - convert from string to unique identifier SYNOPSIS #include <tk.h> Tk_Uid Tk_GetUid(string) ARGUMENTS char *string (in) String for which the corre- sponding unique identifier is desired. ______________________________________________________________________________ DESCRIPTION Tk_GetUid returns the unique identifier corresponding to string. Unique identifiers are similar to atoms in Lisp, and are used in Tk to speed up comparisons and searches. A unique identifier (type Tk_Uid) is a string pointer and may be used anywhere that a variable of type "char *" could be used. However, there is guaranteed to be exactly one unique identifier for any given string value. If Tk_GetUid is called twice, once with string a and once with string b, and if a and b have the same string value (strcmp(a, b) == 0), then Tk_GetUid will return exactly the same Tk_Uid value for each call (Tk_GetUid(a) == Tk_GetUid(b)). This means that variables of type Tk_Uid may be com- pared directly (x == y) without having to call strcmp. In addition, the return value from Tk_GetUid will have the same string value as its argument (strcmp(Tk_GetUid(a), a) == 0). KEYWORDS atom, unique identifier ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | runtime/tk-8 | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://source- forge.net/projects/tcl/files/Tcl/8.6.7/tk8.6.7-src.tar.gz/download. Further information about this software can be found on the open source community website at https://www.tcl.tk/. Tk Tk_GetUid(3tk)