6.14.1 Language selection

Function: typed-language-enabled?

Function: typed-language-enabled? obj

Enable or disable typed language support. This function is meant to be called at the REPL, it does not modify the expander’s behaviour when expanding programs, libraries and standalone eval expressions.

• When called with no arguments: do nothing. Return a boolean value: #t if typed language support is enabled; #f otherwise.
• When called with one argument: if obj is non–false, enable typed language support; otherwise disable it. Return a boolean value: #t if typed language support is enabled after the call; #f otherwise.

Function: strict-r6rs-enabled?

Function: strict-r6rs-enabled? obj

Enable or disable strict R6RS support. This function is meant to be called at the REPL, it does not modify the expander’s behaviour when expanding programs, libraries and standalone eval expressions.

• When called with no arguments: do nothing. Return a boolean value: #t if strict R6RS support is enabled; #f otherwise.
• When called with one argument: if obj is non–false, enable strict R6RS support; otherwise disable it. Return a boolean value: #t if typed language support is enabled after the call; #f otherwise.