Tag: maybe

Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

Advertisements Flutter shows error Non-nullable instance field ‘_areas’ must be initialized. Maybe this is because of not defining null in lists areas what when defining null Like List? _areas; it shows an error on the index Error: Field ‘_areas’ should be initialized because its type ‘List’ doesn’t allow null. Error Line: List _areas; Here is… Read More Field '_areas' should be initialized because its type 'List<Area>' doesn't allow null

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solving nested renamer is not supported with dynamic arguments

Advertisements if cat_vars: df["static_cat"] = ( df.groupby("group_col") .agg({i: "first" for i in cat_vars}) .values.tolist() ) Error: packages\pandas\core\groupby\generic.py in aggregate(self, func, *args, **kwargs) 926 func = _maybe_mangle_lambdas(func) 927 –> 928 result, how = self._aggregate(func, *args, **kwargs) 929 if how is None: 930 return result packages\pandas\core\base.py in _aggregate(self, arg, *args, **kwargs) 355 obj.columns.intersection(keys) 356 ) != len(keys):… Read More solving nested renamer is not supported with dynamic arguments

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RegEx- first character should not contain special characters and subsequent characters should not contain few special characters

Advertisements I have a specific validation scenario. The first character of the string should not contain special characters which I can achieve using /^[!@#$%^&*()_+\-=\[\]{};’:"\\|,.<>\/?]+$/, but subsequent characters should not contain specific special characters, which are !@$%^*+=\[\]{};:\\|<>? I tried that using regex /^[!@#$%^&*()_+\-=\[\]{};’:"\\|,.<>\/?][!@$%^*+=\[\]{};:\\|<>?]+$/ and negating the result but its not working. I want to allow all… Read More RegEx- first character should not contain special characters and subsequent characters should not contain few special characters

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BottomSheetScaffold is overriding the background color of its parent

Advertisements I’m trying out BottomSheetScaffold and I just found a strange behavior (maybe a bug) when using it. I put it inside a Box { } that has a cyan background color: composable(route = "my_route") { Box( modifier = Modifier .fillMaxSize() .background(color = Color.Cyan), ) { val coroutineScope = rememberCoroutineScope() val bottomSheetScaffoldState = rememberBottomSheetScaffoldState() BottomSheetScaffold(… Read More BottomSheetScaffold is overriding the background color of its parent

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Operator function defaults to first if statement in JavaScript calculator project

Advertisements I’m creating a calculator with JavaScript and most functions are working properly, but the operator function defaults to the first if statement each time (I switched add with subtract to test this). i.e. if the add function is in the first if statement of my operator function, every operator button will add the numbers… Read More Operator function defaults to first if statement in JavaScript calculator project

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how to take a value from nested object in headers

Advertisements headers: { host: ‘localhost:3000’, connection: ‘keep-alive’, ‘cache-control’: ‘max-age=0’, ‘sec-ch-ua’: ‘" Not A;Brand";v="99", "Chromium";v="101", "Google Chrome";v="101"’, ‘sec-ch-ua-mobile’: ‘?0’, ‘sec-ch-ua-platform’: ‘"macOS"’, ‘upgrade-insecure-requests’: ‘1’, ‘user-agent’: ‘Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36’, Code: const user: User = req[‘user’]; return { userAgent: { agent: req.headers.connection.reduce((el) => Object.fromEntries( Object.entries(el).map(([k, v]) => [k, Object.values(v)[0]]),… Read More how to take a value from nested object in headers

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