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scheme:tldr:a3fb0
This command is using the Scheme programming language to evaluate the expression ${(define foo 'x)}
.
In Scheme, the define
keyword is used to create a new binding between a symbol (in this case, foo
) and a value (in this case, the symbol x
). The expression (define foo 'x)
is defining a new variable named foo
and assigning it the value x
.
The command is using the --eval
option of the scheme
program to tell it to evaluate the following expression. The expression is enclosed in double quotes to ensure it is treated as a single argument by the command line interpreter.
So, when you run this command, it will start a Scheme interpreter and tell it to evaluate (define foo 'x)
. This will create a variable foo
with the value x
in the Scheme environment.