2.2 Get started with development using X++ in finance and operations apps

Question 1

X++ differences from other languages?

Answer 1

Strong data access statements
Tight integration with system and user metadata
A strong extensibility story with pre/post event handlers and CoC
Case insensitivity

Question 2

Date data type?

Answer 2

Contains the day, month, and year

Question 3

Enums data type?

Answer 3

Named list of literals, stored in DB as enum values

Question 4

GUID data type?

Answer 4

Global unique identifier, unique across all computers and networks

Question 5

Int data type?

Answer 5

32-bit wide integer signed numbers that do not include decimal place, no support for unsigned integer types

Question 6

Int64 data type?

Answer 6

A larger, signed integer data type

Question 7

Real data type?

Answer 7

Number values with decimals

Question 8

Str data type?

Answer 8

Contains values that are a string of characters

Question 9

Time of day data type?

Answer 9

Integer value that represents the number of seconds that passed since midnight

Question 10

UTCDatetime data type?

Answer 10

Combination of date and time of day

Question 11

Arrays composite data type?

Answer 11

Contains a list of items that have the same data type
Dynamic arrays are open and fixed-length arrays specify a certain length

Question 12

Containers composite data type?

Answer 12

Dynamic collections of primitive items or other containers
Pass different types of values, not ideal when used in processes that frequently change size or contents

Question 13

Classes composite data type?

Answer 13

Used to declare an instance of class within a method

Question 14

Delegates composite data type?

Answer 14

Can be defined on a method, table, form, query.
When delegate is called it also calls subscriber methods.
Delegates never return a value

Question 15

Tables composite data type?

Answer 15

Can be used to declare instance of a table
Once declared data can be manipulated

Question 16

Why use EDTs?

Answer 16

Make code easier to read
Set properties on EDT that all instances of that type use
Create hierarchies for EDTs so an EDT can inherit the properties of a parent

Question 17

Variables?

Answer 17

Identifiers that designate a storage location where a value of data type is stored
Contains different scopes; global and local

Question 18

Global variable scope?

Answer 18

Can be used throughout the instance of the class

Question 19

Local variable scope?

Answer 19

Only available within the scope of the class

Question 20

Operators?

Answer 20

Used to compute values
Types include;
assignment operators,
arithmetic operators,
relational operator

Question 21

Assignment operators?

Answer 21

Can change the value of the variable or a field

Question 22

Arithmetic operators?

Answer 22

Used to make numeric calculations

Question 23

Relational operators?

Answer 23

Compare the values between variable values of similar types

Question 24

How to determine the visibility of the variables?

Answer 24

By using three modifiers;
public
private
protected

Question 25

Public modifier?

Answer 25

Makes the variable usable anywhere

Question 26

Private modifier?

Answer 26

Makes the variable only usable within the class that is defined in

Question 27

Protected modifier?

Answer 27

Makes the variable only usable within the class that is defined in and any subclass of that class

Question 28

Types of methods?

Answer 28

Instance methods (object methods)
Static methods (class methods)

Question 29

Instance methods?

Answer 29

Embedded in the project that was created from a class. The object must be instantiated before you can use the method

Question 30

Static methods?

Answer 30

Don’t need to instantiate an object to use the methods.
Must have keyword “static”

Question 31

Basic SQL statements in SQL?

Answer 31

Select
insert_recordset
update_recordset
delete

Question 32

Select statement?

Answer 32

Used to choose what data will be retrieved based on conditions given

Question 33

insert_recordset?

Answer 33

Can insert multiple records by copying the records from one table and inserting them into another

Question 34

update_recordset?

Answer 34

Updated multiple records at the same time

Question 35

delete statement?

Answer 35

Removes an existing record from the table

Question 36

X++ runtime functions?

Answer 36

Business operations
Container operations
Conversions
Date operations
Mathematical operations
Reflection operations
Session operations
String operations

Question 37

Business operations?

Answer 37

Enter financial data and calculate financial formulas

Question 38

Container operations?

Answer 38

Run functions to manipulate the container data type

Question 39

Conversions?

Answer 39

Convert data from one type to another

Question 40

Date operations?

Answer 40

Manipulate date data type

Question 41

Mathematical operations?

Answer 41

Used to perform additional calculations

Question 42

Reflection operations?

Answer 42

Access an object’s metadata and return other metadata for the object

Question 43

Session operations?

Answer 43

Change or report current user connection to F&O apps

Question 44

String operations?

Answer 44

Manipulate string data type