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- sssstttt((((1111)))) ((((llllooooccccaaaallll)))) sssstttt((((1111))))
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- NNNNAAAAMMMMEEEE
- st - a Little Smalltalk
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- st [options] [files]
-
- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- sssstttt is an interpreter for a Smalltalk-like language. For a
- complete description of the language accepted by the
- interpreter see the user manual. Options accepted by the
- command are as follows:
-
- -a If the -a option is given statistics on the number of
- memory allocations will be displayed following
- execution.
-
- -d_d_i_g_i_t
- If the _d_i_g_i_t is zero only those results explicitly
- requested by the user will be printed. If 1, the
- values of expressions typed at the keyboard will be
- displayed (this is the default). If 2, the values of
- expressions and the values assigned in assignment
- statements will be displayed.
-
- -f The -f option indicates fast loading should be used,
- which loads a binary save image (see ``)s'' below) for
- the standard library.
-
- -g The next argument is taken to be the name of an
- additional library stored in the system library area.
- The library is loaded following the standard prelude,
- just as if a ``)g'' directive were given at the
- beginning of execution (see below).
-
- -l The next argument is taken to be the name of a file
- containing a binary image saved using the )s directive
- (see below). This binary image is loaded prior to
- execution.
-
- -m Do not perform fast loading. (Used when fastloading is
- the default).
-
- -n The -n option, if given, suppresses the loading of the
- standard library. As this gives you a system with
- almost no functionality, it is seldom useful except
- during debugging.
-
- -r The next argument is taken to be the name of a file of
- Smalltalk commands. The file is included prior to
- execution, just as if a ``)r'' directive were given at
- the beginning of execution (see below).
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- Hewlett-Packard - 1 - (printed 9/19/86)
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- sssstttt((((1111)))) ((((llllooooccccaaaallll)))) sssstttt((((1111))))
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- -s In normal operation, at the end of execution the number
- of reference count increments and decrements is printed
- just prior to exit. In the absence of cycles these two
- figures should be equal. Since cycles can cause large
- chunks of memory to become unreachable, and seriously
- degrade performance, this information is often useful
- in debugging. The -s option, if given, suppresses the
- printing of this information.
-
- The files, if given, must contain class descriptions.
- Consult the reference manual for the syntax for class
- descriptions. The classes defined are included along with
- the standard library of classes before execution begins.
-
- Once execution begins, the cursor will tab over 8 spaces to
- indicate that a command can be entered. A command consists
- of a valid Smalltalk expression, without a terminating
- period. As each expression is entered it is executed by the
- Little Smalltalk interpreter, and the results displayed.
-
- The following system directives can be entered in place of
- commands:
-
- )e filename
- Edit the named file, which must contain only class
- descriptions. The Little Smalltalk system will
- suspend, leaving the user in an editor for making
- changes to the named file. Upon exiting the editor,
- the named file will automatically be included, as with
- the )i directive (below). The editor chosen by this
- command is taken from the variable EDITOR in the user's
- environment.
-
- )g filename
- Search for a file with the given name in the system
- library area. If found, load the library in with the
- users classes. This is useful for creating libraries
- of commonly used classes which are not part of the
- standard prelude, such as classes for statistics
- applications or for graphics.
-
- )i filename
- Include the named file. The File must contain one or
- more class descriptions. The class descriptions are
- parsed, and if syntactically legal new instances of
- class CCCCllllaaaassssssss are added to the Smalltalk system.
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- )l filename
- Load a saved binary environment. The file must have
- been previously created using the )s directive (below).
- The values of all variables are overridden.
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- Hewlett-Packard - 2 - (printed 9/19/86)
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- sssstttt((((1111)))) ((((llllooooccccaaaallll)))) sssstttt((((1111))))
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- )r filename
- Read the named file. The effect is just as if the
- lines in the file had been typed at the keyboard. The
- file cannot contain class descriptions.
-
- )s filename
- Save the current environment in the named file. The
- values of all variables will be saved, and can later be
- restored using the )l directive (above).
-
- )!string
- Execute the string following the exclamation point as a
- Unix command.
-
- AAAAuuuutttthhhhoooorrrr
- Tim Budd, Department of Computer Science, The University of
- Arizona.
-
- SSSSeeeeeeee AAAAllllssssoooo
- Timothy A. Budd, _A _L_i_t_t_l_e _S_m_a_l_l_t_a_l_k _U_s_e_r_s _M_a_n_u_a_l.
-
- BBBBuuuuggggssss
- Not all the Smalltalk-80 Language described in the Blue Book
- is supported; see the user manual for details. (Smalltalk-
- 80 is a trademark of Xerox Corporation).
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- Hewlett-Packard - 3 - (printed 9/19/86)
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