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lolevel - null pointer missing? added by ptcek on Wed Sep 24 14:29:07 2014

(use lolevel)

(address->pointer 0)
;=> <pointer 0x0>

(null-pointer)
;=> Error: unbound variable: null-pointer

        Call history:

        <syntax>          (null-pointer)
        <eval>    (null-pointer)        <--
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Which procedure can be used to check whether its argument is a symbol?
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