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package main import ( "encoding/gob" "fmt" "os" ) type User struct { Username string Password string } type Admin struct { Username string Password string IsAdmin bool } type Deleter interface { Delete() } ...

package main import ( "encoding/gob" "fmt" "log" "os" ) type User struct { Username string Password string } type Admin struct { Username string Password string IsAdmin bool } type Deleter interface ...

var providerName = "System.Data.SqlClient"; //Oracle.ManagedDataAccess.Client, IBM.Data.DB2 var connectionString = "{your-connection-string}"; //you will probably get the above two values in the ConnectionStringSettings object from .config file var factory = DbProviderFac...

Assume that I have a file named in.txt: $ cat in.txt a b a c a d I only want to replace the a\nc with deleted, but not a\nb or a\nd. $ sed -e ':loop # create a branch/label named `loop` $!{ N # append the next line of input into the pattern space /\n$/!b...

Setup Steps: Download and install jdk8. Add the following to your project’s main build.gradle buildscript { repositories { mavenCentral() } dependencies { classpath 'me.tatarka:gradle-retrolambda:3.2.3' } } Now add this to your application m...

Encyption happens by replacing each letter of the alfabet with an other letter. The keys can be showed with this circle. Here is a shift of 8 chars used. Here will the A replaced by T, B by U, C by V etc. So will next string encrypted: OriginalEncryptedHELLO WORLDAXEEH PHKEW

Decription happens by the same cicle showed in the encryption example. Example: EncryptedOriginalAXEEH PHKEWHELLO WORLD

While coding a script or a function, it can be the case that one or more than one temporary file be needed in order to, for example, store some data. In order to avoid overwriting an existing file or to shadow a MATLAB function the tempname function can be used to generate a unique name for a te...

There can be up to 12 independent variables, there is always 1 dependent variable, and any number of parameters can be fitted. Optionally, error estimates can be input for weighting the data points. (T. Williams, C. Kelley - gnuplot 5.0, An Interactive Plotting Program) If you have a data set a...

If you load your fit parameters from a file, you should declare in it all the parameters you're going to use and, when needed, initialise them. ## Start parameters for the fit of data.dat m = -0.0005 q = -0.0005 d = 1.02 Tc = 45.0 g_d = 1.0 b = 0.0100...

class Program { static void Main(string[] args) { string serverName = "INTACT-ETL"; string databaseName = "SOMEDB"; string collectionName = "TestCol"; //Build Connection string ...

Complete the Installation and setup part to connect your app to Firebase. This will create the project in Firebase. Add the dependency for Firebase Cloud Messaging to your module-level build.gradle file: dependencies { compile 'com.google.firebase:firebase-messaging:10.2.1' } ...

The basic use of fit is best explained by a simple example: f(x) = a + b*x + c*x**2 fit [-234:320][0:200] f(x) ’measured.dat’ using 1:2 skip 4 via a,b,c plot ’measured.dat’ u 1:2, f(x) Ranges may be specified to filter the data used in fitting. Out-of-range data points are ignored. (T. W...

SQL has two logical functions – CHOOSE and IIF. The CHOOSE function returns an item from a list of values, based on its position in the list. This position is specified by the index. In the syntax, the index parameter specifies the item and is a whole number, or integer. The val_1 … val_n paramete...

Try catch Errors must always be handled. If you are using synchronous programming you could use a try catch. But this does not work if you work asynchronous! Example: try { setTimeout(function() { throw new Error("I'm an uncaught error and will stop the server!"); }, 1...

array_add() This method is used to add new key value pairs to an array. $array = ['username' => 'testuser']; $array = array_add($array, 'age', 18); result ['username' => 'testuser', 'age' => 18]

camel_case() This method changes a string to camel case camel_case('hello_world'); result HelloWorld

Path methods helps easy access to application related paths easily from anywhere. public_path() This method returns the fully qualified public path of the application. which is the public directory. $path = public_path();

The useGravity property of a RigidBody controls whether gravity affects it or not. If set to false the RigidBody will behave as if in outer space (without a constant force being applied to it in some direction). GetComponent<RigidBody>().useGravity = false; It is very useful in the situati...

First, Go to Tools > NuGet Package Manager > Package Manager Console. Enter this Command "Install-Package Plugin.Facebook" in Package Manger Console. Now all the file is automatically created. Video : Login with Facebook in Xamarin Forms Other Authentication by using Pl...