Tutorial by Examples: me

IOS 10 Permission required for accessing Camera, Photo library ....

iOS 10 Now Requires User Permission to Access Media Library, Photos, Camera and other Hardware like these. The solution for this is to add their keys into info.plist with description for user that how we are using their data , iOS already required permissions to access microphone, camera, and m...

Query a connection object without parameters

Use may now use the connExecute-Function for executing a query. You have the option to get the query result as an object or array. The result ist printed to console.log. function connExecute(err, connection) { if (err) { console.error(err.message); return; } sql = ...

Custom Element - Hello World

Create a new HTML tag named <hello-world> that will display "Hello, World!": <script> //define a class extending HTMLElement class HelloWorld extends HTMLElement { connectedCallback () { this.innerHTML = 'Hello, World!' } } //register the new custom elem...

Consider Writing More Documentation, Tests, Logging and Assertions Instead of Using a Debugger

Debugging takes time and effort. Instead of chasing bugs with a debugger, consider spending more time on making your code better by: Write and run Tests. Python and Django have great builtin testing frameworks - that can be used to test your code much faster than manually with a debugger. Writ...

Defining the document class

The very first line in each of your LaTeX programs should do this. It should follow the form \documentclass{...}. What you put within the curly braces is very important. Some document classes give you extra commands to use, others use a different format, and all have specific parameters you can inp...

Custom Camera Control - Mouse-based Sliding

Here's an example of a custom camera controller. This reads the position of the mouse within the client window, and then slides the camera around as if it were following the mouse on the window. index.html <html> <head> <title>Three.js Custom Mouse Camera Control Ex...

Using Packages to create classes with the same name

First Test.class: package foo.bar public class Test { } Also Test.class in another package package foo.bar.baz public class Test { } The above is fine because the two classes exist in different packages.

Sending Downstream Messages using Postman

To do this in Postman, you simply have to set the following: Set request type to POST In the Headers, set the following: Content-Type = application/json Authorization = < Your FCM Server Key > (See your Firebase Console's Cloud Messaging Tab) Set the payload parameters in the Body...

Elements of String

Elements of String are characters that can be accessed by the indexing operation string[index]. val str = "Hello, World!" println(str[1]) // Prints e String elements can be iterated with a for-loop. for (c in str) { println(c) }

Import data from Excel file

//create a list to hold all the values List<string> excelData = new List<string>(); //read the Excel file as byte array byte[] bin = File.ReadAllBytes("C:\\ExcelDemo.xlsx"); //or if you use asp.net, get the relative path byte[] bin = File.ReadAllBytes(Server.MapPath(&q...

Creating Custom Error Messages in Model and in Controller

Let's say that you have the following class: public class PersonInfo { public int ID { get; set; } [Display(Name = "First Name")] [Required(ErrorMessage = "Please enter your first name!")] public string FirstName{ get; set; } [Display(Name = "L...

Passing command line arguments

Where command line arguments are supported they can be read in via the get_command_argument intrinsic (introduced in the Fortran 2003 standard). The command_argument_count intrinsic provides a way to know the number of arguments provided at the command line. All command-line arguments are read in ...
Fortran • I/O

Method Calls

This: class Villain(val minions: Map[String, Minion]) extends Dynamic { def applyDynamic(name: String)(jobs: Task*) = jobs.foreach(minions(name).do) def applyDynamicNamed(name: String)(jobs: (String, Task)*) = jobs.foreach { // If a parameter does not have a name, and is simply given, th...

Interaction Between Field Access and Update Method

Slightly counterintuitively (but also the only sane way to make it work), this: val dyn: Dynamic = ??? dyn.x(y) = z is equivalent to: dyn.selectDynamic("x").update(y, z) while dyn.x(y) is still dyn.applyDynamic("x")(y) It is important to be aware of this, or else...

Oracle SQL CASE statement in a Netsuite formula

Using a CASE statement, conditionally display an expression in the column based on values found in another column, a.k.a. “my kingdom for an OR”. In the example, the result is obtained when the status of the transaction is Pending Fulfillment or Partially Fulfilled: CASE DECODE( {status}, 'Pending ...

Parsing a hierarchical record name using a regular expression

Using a regular expression, parse a record name that might be hierarchical. The expression looks for the final colon in the name. It returns what follows the colon, or the entire name if none: regexp_substr( {name} , '[^:]*$' )

Customize the CSS (stylesheet) for a column by inserting a DIV element

'<div style="font-size:11pt">' || expression || '</div>'

Test the value of `mainline` in an SQL CASE statement

In a saved search formula, the possible values of mainline are designed to be useful in an HTML context. When mainline is true, the value of {mainline} is the 1-character string * (asterisk). When mainline is false, the value of {mainline} is the 6-character string   (non-breaking space, HT...

Using the each() Method

Your typical jQuery object will contain references to any number of DOM elements, and that's why jQuery objects are often referred to as collections. If you want to do any manipulating with specific elements (e.g. getting a data attribute, calculating specific positions) then you need to use .each()...

High Order Functions(Function as Parameter)

A higher-order function, as opposed to a first-order function, can have one of three forms: One or more of its parameters is a function, and it returns some value. It returns a function, but none of its parameters is a function. Both of the above: One or more of its parameters is a fu...

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