Node:Binding Reflection, Previous:Internal Definitions, Up:Binding Constructs
Guile provides a procedure for checking whether a symbol is bound in the top level environment.
| defined? sym [env] | Scheme Procedure |
| scm_definedp (sym, env) | C Function |
Return #t if sym is defined in the lexical environment env. When env is not specified, look in the top-level environment as defined by the current module.
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