Test whether the keys within a map are stringable - a simple map,
        that can be optimized and whose keys can be cached
485592
def are_stringable_keys(self, m):
        
        for x in m.keys():
            if len(self.handlers[x].tag(x)) != 1:
                return False
        return True
616736
function cacheHas(cache, value) {
        var map = cache.__data__;
        if (isKeyable(value)) {
          var data = map.__data__, hash = typeof value == 'string' ? data.string : data.hash;
          return hash[value] === HASH_UNDEFINED;
        }
        return map.has(value);
      }
298109
def decode_string(self, string, cache, as_map_key):
        
        if is_cache_key(string):
            return self.parse_string(cache.decode(string, as_map_key),
                                     cache, as_map_key)
        if is_cacheable(string, as_map_key):
            cache.encode(string, as_map_key)
        return self.parse_string(string, cache, as_map_key)
677486
function hasKey (obj, keys) {
    let o = obj;
    keys.slice(0,-1).forEach(function (key) {
        o = (o[key] || {});
    });

    let key = keys[keys.length - 1];
    return key in o;
}
863185
private static boolean contains(final Multimap<String, ?> map, final String searchKey) {
        for (String key: map.keys()) {
            if (key.equalsIgnoreCase(searchKey)) {
                return true;
            }
        }
        return false;
    }
583197
public static boolean containsKey(Map<?, ?> data, Object what) {
        return data != null && data.containsKey(what);
    }
1103106
def stringify_keys(object)
      case object
      when Hash
        object.each_with_object({}) do |(key, value), result|
          result[key.to_s] = stringify_keys(value)
        end
      when Array
        object.map { |e| stringify_keys(e) }
      else
        object
      end
    end
858156
public static boolean mapContainsKeys(Map<?, ?> _map, Object... _keys) {
        if (_map == null) {
            return false;
        } else if (_keys == null) {
            return true;
        }
        for (Object key : _keys) {
            if (key != null && !_map.containsKey(key)) {
                return false;
            }
        }
        return true;
    }
240892
function stringToRegexp(str, keys, options = {}) {
  let tokens = parse(str, options);
  let end = options.end !== false;
  let strict = options.strict;
  let delimiter = options.delimiter ? escapeString(options.delimiter) : '\\/';
  let delimiters = options.delimiters || './';
  let endsWith = [].concat(options.endsWith || []).map(escapeString).concat('$').join('|');
  let isEndDelimited = false;
  let route = '';

  // Iterate over the tokens and create our regexp string.
  for (let i = 0; i < tokens.length; i++) {
    let token = tokens[i];

    if (typeof token === 'string') {
      route += escapeString(token);
      isEndDelimited = i === tokens.length - 1 && delimiters.includes(token[token.length - 1]);
      continue;
    }

    let prefix = escapeString(token.prefix);
    let capture = token.repeat
      ? `(?:${token.pattern})(?:${prefix}(?:${token.pattern}))*`
      : token.pattern;

    if (keys) keys.push(token);

    if (token.optional) {
      if (token.partial) {
        route += prefix + `(${capture})?`;
      } else {
        route += `(?:${prefix}(${capture}))?`;
      }
    } else {
      route += `${prefix}(${capture})`;
    }
  }

  if (end) {
    if (!strict) route += `(?:${delimiter})?`;

    route += endsWith === '$' ? '$' : `(?=${endsWith})`;
  } else {
    if (!strict) route += `(?:${delimiter}(?=${endsWith}))?`;
    if (!isEndDelimited) route += `(?=${delimiter}|${endsWith})`;
  }

  return `^${route}`;
}
811155
function ensureMap(set) {
            if (!set['[[SetData]]']) {
              var m = set['[[SetData]]'] = new collectionShims.Map();
              Object.keys(set._storage).forEach(function(k) {
                // fast check for leading '$'
                if (k.charCodeAt(0) === 36) {
                  k = k.substring(1);
                } else {
                  k = +k;
                }
                m.set(k, k);
              });
              set._storage = null; // free old backing storage
            }
          }
289108
function _prepareKeys(template, key) {
  return [].concat.apply([], _checkBraces(key).map(function (k) {
    return _checkEach(template, k);
  }));
}
163208
public static <K, V> Map<K, V> toMap(Iterable<K> keys, Iterable<V> values) {
		return toMap(keys, values, false);
	}
1248045
def check_structure(self, keys):
        
        """
        return set(keys) <= set([self.__options['attrkey'], self.__options['valuekey']])
48927
def writable?(key, parameters = {}, conditions = {})
      case key
      when String, Numeric, Symbol
        !conditions.has_key?(:expire_in)
      else nil
      end
    end
929275
def get_as_nullable_parameters(self, key):
        
        value = self.get_as_nullable_map(key)
        return Parameters(value) if value != None else None
1362032
function(map, key, value) {

    var list = [];

    if (map.has(key)) {

      list = map.get(key);

      if (!list) {
        list = [];
      }


    }
    list.push(value);
    map.set(key, list);

}
430496
static <K, V> Map<K, V> keyValuesToMap(Iterator<KeyValue<K, V>> keyValues) {
        Map<K, V> map = new HashMap<>();
        keyValues.forEachRemaining(pair -> map.put(pair.getKey(), pair.getValue()));
        return map;
    }