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PHP 2021-10-02 09:54:05
laravel collection groupBy
$collection = collect([ ['account_id' => 'account-x10', 'product' => 'Chair'], ['account_id' => 'account-x10', 'product' => 'Bookcase'], ['account_id' => 'account-x11', 'product' => 'Desk'], ]); $grouped = $collection->gr... Add solution -
C# 2021-10-01 21:56:08
split a datatable based on number of rows
DataTable[] splittedtables = tbl.AsEnumerable() .Select((row, index) => new { row, index }) .GroupBy(x => x.index / 12) // integer division, the fractional part is truncated .Select(g => g.Select(x => x.row).CopyToDataTable()) ... Add solution -
PHP 2021-10-01 11:17:08
download csv php mysql
CREATE TABLE `users` ( `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT, `username` varchar(80) NOT NULL, `name` varchar(50) NOT NULL, `gender` varchar(10) NOT NULL, `email` varchar(70) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1; =========... Add solution -
C# 2021-10-01 07:59:02
encrypt with public key and decrypt with private key c#
private static string _privateKey; private static string _publicKey; private static UnicodeEncoding _encoder = new UnicodeEncoding(); private static void RSA() { var rsa = new RSACryptoServiceProvider(); _privateKey = rsa.ToXmlString(true); _public... Add solution -
C# 2021-10-01 00:11:06
save binary data to file c#
// The string we are working with. string str = @"1010101010010100010101101"; // The number of bits in a 64 bit integer! int size = 64; // Pad the end of the string with zeros so the length of the string is divisible by 64. str += new string('0'... Add solution -
C# 2021-10-01 00:08:03
array of array
//Array.from() lets you create Arrays from array-like objects //(objects with a length property and indexed elements); //and also: //More clearly, Array.from(obj, mapFn, thisArg) //has the same result as Array.from(obj).map(mapFn, thisArg), //except tha... Add solution