Procs
proc mapIterBodyImpl(f: NimNode; iterables: NimNode; res = genSym(nskVar, "res")): NimNode {. ...raises: [Exception], tags: [RootEffect], forbids: [].}
- res: generated symbol name temporarily storing iteration result and will be used as if f(*res) in Python at each loop; do not use genSym if wanting simpler err msg for arg num mismatch Source Edit