Tutorial by Examples: pt

A frequent reason why your read operation may not work is because your security rules reject the operation, for example because you're not authenticated (by default a database can only be accessed by an authenticated user). You can see these security rule violations in the JavaScript console of you...

You shouldn't throw raw values as exceptions, instead use one of the standard exception classes or make your own. Having your own exception class inherited from std::exception is a good way to go about it. Here's a custom exception class which directly inherits from std::exception: #include <ex...

The iv is prefixed to the encrypted data aesCBC128Encrypt will create a random IV and prefixed to the encrypted code. aesCBC128Decrypt will use the prefixed IV during decryption. Inputs are the data and key are Data objects. If an encoded form such as Base64 if required convert to and/or from in ...

You should have a plain CMake project myproject, and we are going to make an Eclipse workspace outside of it: myproject/ .git/ CMakeLists.txt src/ main.cpp workspace/ myproject/ Release/ Debug/ Qt (optional) Get latest Eclipse ...

If you have an elixir file; a script or a module and want to load it into the current IEx session, you can use the c/1 method: iex(1)> c "lib/utils.ex" iex(2)> Utils.some_method This will compile and load the module in IEx, and you'll be able to call all of it's public methods. ...

It is not a good idea to expose Option types to C# code, as C# does not have a way to handle them. The options are either to introduce FSharp.Core as a dependency in your C# project (which is what you'd have to do if you're consuming an F# library not designed for interop with C#), or to change None...

The iv is prefixed to the encrypted data aesCBC128Encrypt will create a random IV and prefixed to the encrypted code. aesCBC128Decrypt will use the prefixed IV during decryption. Inputs are the data and key are Data objects. If an encoded form such as Base64 if required convert to and/or from in ...

The point about temporary tables is that they're limited to the scope of the connection. Dapper will automatically open and close a connection if it's not already opened. That means that any temp table will be lost directly after creating it, if the connection passed to Dapper has not been opened. ...

Google Apps Script is a JavaScript based platform-as-a-service primarily used to automate and extend Google Apps. Apps Script runs exclusively on Google's infrastructure requiring no server provisioning or configuration. An online IDE serves as the interface to the entire platform connecting all the...

#include <linux/init.h> #include <linux/module.h> /** * This function is called when the module is first loaded. */ static int __init hello_kernel_init(void) { printk("Hello, World!\n"); return 0; } /** * This function is called when is called if a...

Command Structure is sqlcmd -S yourservername\instancename -d database_name -o outputfilename_withpath -Q "your select query" Switches are as follows -S for servername and instance name -d for source database -o for target outputfile (it will create output file) -Q fo...

CREATE CERTIFICATE My_New_Cert FROM FILE = 'D:\Temp\CertTest\certificateDER.cer' GO Create the certificate SELECT EncryptByCert(Cert_ID('My_New_Cert'), 'This text will get encrypted') encryption_test Usually, you would encrypt with a symmetric key, that key would get encrypted by the asym...

USE TDE CREATE DATABASE ENCRYPTION KEY WITH ALGORITHM = AES_256 ENCRYPTION BY SERVER CERTIFICATE My_New_Cert GO ALTER DATABASE TDE SET ENCRYPTION ON GO This uses 'Transparent Data Encryption' (TDE)

-- Create the key and protect it with the cert CREATE SYMMETRIC KEY My_Sym_Key WITH ALGORITHM = AES_256 ENCRYPTION BY CERTIFICATE My_New_Cert; GO -- open the key OPEN SYMMETRIC KEY My_Sym_Key DECRYPTION BY CERTIFICATE My_New_Cert; -- Encrypt SELECT EncryptByKey(Key_GUID('SSN_Key_01'),...

SASS's optional arguments let you use a parameter only if you specify its value; otherwise, it will be ignored. Let's take an example of the following mixin: @mixin galerie-thumbnail ($img-height:14em, $img-width: null) { width: $img-width; height: $img-height; outline: 1px solid li...

The predicate setup_call_cleanup/3, which is currently being considered for inclusion in the Prolog ISO standard and provided by an increasing number of implementations, lets us ensure that resources are correctly freed after an exception is thrown. A typical invocation is: setup_call_cleanup(open...

While launching an application firstly main thread is executed. This Main thread handles all the UI concept of application. If we want to run long the task in which we don't need the UI then we use thread for running that task in background. Here is the example of Thread which describes blow: new ...

Options are used for adding capabilities such as "User-Agent". Example in C#: var options = new PhantomJSOptions(); options.AddAdditionalCapability("phantomjs.page.settings.userAgent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:25.0) Gecko/20100101 Firefox/25.0&qu...

SELECT EncryptByPassphrase('MyPassPhrase', 'This text will get encrypted') This will also encrypt but then by passphrase instead of asymmetric(certificate) key or by an explicit symmetric key.

The onTouchEvents() for nested view groups can be managed by the boolean onInterceptTouchEvent. The default value for the OnInterceptTouchEvent is false. The parent's onTouchEvent is received before the child's. If the OnInterceptTouchEvent returns false, it sends the motion event down the cha...