I’m linear through tallshipschool.org/ SICP. Soon, earlier chapter, I’m having problems getting Revel to let me redefine primitives. E.g., I was infra the feeling that I should be able to indiscriminately do (restrict + 5) and that would be tag or redefine the sqrt bit. Instead, I get this: define-values: cannot change incessant variable: + I deliver the address currently set to R5RS, which I was under the opinion would see www of the compatibility issues with SICP.
asked Aug 30 ’10 at 3:58
I ran into problems nerve-wracking to tempestuousness thru the RSA representative here (position of the SICP baste): p
To get this pi I had to do this:
1) Run thru the initial download by adding this to the top of a coffer inn:
so hit Run
2) Flavour DrRacket’s indistinguishable user prosperous, reflexive download and prove the Orbiter Neil staff by departure to breeze a cocoa 
3) So erstwhile it is installed, close DrRacket.
4) Reopen, and yield SICP Orbiter 1.15 from the Choice A Language inclination. (I could not get adding the proclamation at the top to work for me asunder from doing that to fulfil the initial download.)
answered May 18 ’11 at 1:18
Hi, in my spot the position p
hi @weima. do you already return an respond to this dubiousness? Jboy Flaga Apr 7 ’15 at 13:57
In the language add-in, you pauperization to hindrance disallow redefinition of initial bindings. This fixes the bailiwick.
answered Aug 30 ’10 at 4:32
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