(doc-group misc  «Miscellaneous.») (defdoc T  «A boolean "true".»  :doc-example  «(not T)   ; ↳ NIL»  :doc-example  «(if T 'yes 'no)   ; ↳ yes»  :doc-group misc  :doc-see NIL) (defdoc (sym term . rest)  «Return a symbol with the name being the concatenation of terms   formatted as strings.    This is equivalent to `(sym (str …))`.»  :doc-example  «(sym "a" 'b 1)   ; ↳ ab1»   :doc-group misc   :doc-see sym?) (defdoc (set-top-level-value! sym expr)  «Evaluate the expression and assign the result to the symbol in the top   level (global) environment.    The use of this function is discouraged.  For the usual assignment of   values to names it is recommended instead to use `(def …)` and/or   `(set!  …)`.»  :doc-example  «(let {[abc 2]}     (set-top-level-value! 'abc 123)     abc)   ; ↳ 2   abc   ; ↳ 123»  :doc-group misc  :doc-see top-level-value  :doc-see set!) (defdoc (top-level-value sym)  «Return the value bound to the symbol in the top level (global)   environment.»  :doc-example  «(def abc 1)   (let {[abc 2]}     (cons abc (top-level-value 'abc)))   ; ↳ (2 . 1)   abc   ; ↳ 1»  :doc-group misc  :doc-see set-top-level-value!) (defdoc (makunbound sym)  «Make the symbol unbound.»  :doc-example  «(def x 1)   (bound? 'x)   ; ↳ T   x   ; ↳ 1   (makunbound 'x)   (bound? 'x)   ; ↳ NIL   x   ; ‼ eval: variable x has no value»  :doc-group misc  :doc-see bound?) (defdoc (size-of v)  «Return the size of the value in bytes, if applicable.    Works only with C integer types, arrays, strings, and in-memory   buffers.»  :doc-example  «(size-of "hello")   ; ↳ 5»  :doc-example  «(size-of (arr 'u32 1 2 3))   ; ↳ 12»  :doc-example  «(def b (buffer))   (io-write b "hello")   (size-of b)   ; ↳ 5»  :doc-group misc  :doc-see type-of)