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In scheme, set can only re-define existing variables while def cannot
redefine existing variables in lambda context. Def within lambda
creates a new variable at the nearest enclosing scope.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Match scheme name.
Signed-off-by: Keith Packard <keithp@keithp.com>
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* print -> write, patom -> display
* Add read-char, write-char
* Add exit, current-jiffy, current-second, jiffies-per-second
* Add for-each and string-for-each
* Avoid duplicate builtins with different atoms
Signed-off-by: Keith Packard <keithp@keithp.com>
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Cond and while compare against #f, just like scheme says to.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Don't crash when printing null stack this way.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Get rid of the remaining duplicate defines.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This provides call/cc and makes 'stacks' visible to the application.
Signed-off-by: Keith Packard <keithp@keithp.com>
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