src/basilisp/lang/runtime.py
def __get_or_create(
        ns_cache: NamespaceMap,
        name: sym.Symbol,
        module: types.ModuleType = None,
        core_ns_name=CORE_NS,
    ) -> lmap.Map:
        """Private swap function used by `get_or_create` to atomically swap
        the new namespace map into the global cache."""
        ns = ns_cache.entry(name, None)
        if ns is not None:
            return ns_cache
        new_ns = Namespace(name, module=module)
        if name.name != core_ns_name:
            core_ns = ns_cache.entry(sym.symbol(core_ns_name), None)
            assert core_ns is not None, "Core namespace not loaded yet!"
            new_ns.refer_all(core_ns)
        return ns_cache.assoc(name, new_ns)
def __get_or_create(
        ns_cache: NamespaceMap,
        name: sym.Symbol,
        module: types.ModuleType = None,
        core_ns_name=CORE_NS,
    ) -> lmap.Map:
        """Private swap function used by `get_or_create` to atomically swap
        the new namespace map into the global cache."""
        ns = ns_cache.entry(name, None)
        if ns is not None:
            return ns_cache
        new_ns = Namespace(name, module=module)
        if name.name != core_ns_name:
            core_ns = ns_cache.entry(sym.symbol(core_ns_name), None)
            assert core_ns is not None, "Core namespace not loaded yet!"
            new_ns.refer_all(core_ns)
        return ns_cache.assoc(name, new_ns)
Private swap function used by `get_or_create` to atomically swap
        the new namespace map into the global cache.