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5
03_ABAP_SQL.md
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@@ -136,7 +136,7 @@ Views](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm
You use ABAP SQL `SELECT` statements to read data from one or more database tables (or views). This can be done to create a multirow or single row result set by assigning the result set to a suitable data object, i. e. you can store the multirow read result in an internal table or the single row result in a structure.
The `SELECT` statement includes several clauses that serve
different purposes. The following code snippet shows the basic syntax:
different purposes. The following code snippet shows the basic syntax (see the note below for a different but interchangeable syntax):
``` abap
SELECT FROM source "What database table or view to read from
FIELDS field_list "What columns should be read
@@ -155,8 +155,7 @@ SELECT FROM source "What database table or view to read from
> - specified in an [operand position](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenoperand_position_glosry.htm) of an ABAP SQL statement.
> See more information [here](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenhost_variable_glosry.htm).
>- The `SELECT` list, i. e. the fields that are specified, can also be specified following the `SELECT`
keyword before the `FROM` clause - without `FIELDS`. The
following two `SELECT` statements are basically the same but differently arranged:
keyword before the `FROM` clause - without `FIELDS`. The following two `SELECT` statements are basically the same but differently arranged. The code snippets in the cheat sheet randomly use one syntax or the other.
> ``` abap
> SELECT FROM dbtab
> FIELDS comp1, comp2, comp3

3541
05_Constructor_Expressions.md
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33
06_Dynamic_Programming.md
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@@ -370,7 +370,6 @@ ASSIGN s-xl1 TO <simple>.
"ASSIGN s-tab_ha TO <simple>.
ASSIGN s-oref TO <object>.
s-oref = NEW zcl_demo_abap_objects( ).
```
<p align="right"><a href="#top">⬆️ back to top</a></p>
@@ -1028,9 +1027,12 @@ st = VALUE #( col1 = 1 col2 = `aaa` col3 = `Z` ).
APPEND st TO it.
DATA(dref) = NEW st_type( col1 = 2 col2 = `b` col3 = `Y` ).
"You can achieve the access using ASSIGN statements as shown above, or
"by statically specifying the structure and the (object) component selector
"followed by a character-like data object in parentheses.
"You can achieve the access using ASSIGN statements as shown above
"(using field symbols), ...
ASSIGN st-('COL1') TO FIELD-SYMBOL(<col1>).
"... or by statically specifying the structure and the (object) component
"selector followed by a character-like data object in parentheses.
"Write position
st-('COL1') = 123.
it[ 1 ]-('COL1') = 456.
@@ -1038,15 +1040,24 @@ dref->('COL1') = 789.
"Read position
"The example shows how you can retrieve the textual content of any component
"of any structure.
DATA(content_col2) = CONV string( st-('COL1') ).
DATA(content_col3) = |{ st-('COL3') }|.
DATA content_col1 LIKE st-col1.
"of any structure. As a prerequisite, the components must be convertible
"to type string in the example.
DATA content_col1 TYPE string.
content_col1 = st-('COL1').
DATA(content_col2) = CONV string( st-('COL2') ).
DATA(content_col3) = |{ st-('COL3') }|.
"The following example creates an anonymous data object. The dereferenced
"data reference variable is assigned the component value. Using the LIKE
"addition, the appropriate type is specified (and not the string type as
"above for the structure component col1 that is of type i).
DATA dref_comp TYPE REF TO data.
CREATE DATA dref_comp LIKE st-('COL3').
dref_comp->* = st-('COL3').
CREATE DATA dref_comp LIKE st-('COL1').
dref_comp->* = st-('COL1').
"As shown further down, using RTTI to get the absolute type name of the
"dereferenced data reference variable.
DATA(type_used) = cl_abap_typedescr=>describe_by_data(
dref_comp->* )->absolute_name. "\TYPE=I
"If the component is not found, a catchable exception is raised.
TRY.
@@ -1766,7 +1777,7 @@ tdo_by_name_elem_helper = cl_abap_typedescr=>describe_by_name( 'ELEMTYPE' ).
"... using the cl_abap_typedescr=>describe_by_data method.
"In this case, the data objects are provided.
"The examples cover an elementary data object, a structure and and
"The examples cover an elementary data object, a structure and an
"internal table.
DATA elemdobj TYPE elemtype.
DATA strucdobj TYPE structype.

258
07_String_Processing.md
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@@ -42,7 +42,7 @@
- [Escaping Special Characters](#escaping-special-characters)
- [Excursions](#excursions)
- [Comparison Operators for Character-Like Data Types in a Nutshell](#comparison-operators-for-character-like-data-types-in-a-nutshell)
- [String Processing Using the XCO Library](#string-processing-using-the-xco-library)
- [Miscellaneous Classes for String Processing](#miscellaneous-classes-for-string-processing)
- [Executable Example](#executable-example)
@@ -2008,147 +2008,179 @@ IF s8 NP `*c#D*`. ... "false; sy-fdpos: 2
<p align="right"><a href="#top">⬆️ back to top</a></p>
### String Processing Using the XCO Library
The Extension Components Library (XCO) library provides [released APIs](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenreleased_api_glosry.htm) and offers various development utilities. Find more information [here](https://help.sap.com/docs/btp/sap-business-technology-platform/overview-of-xco-modules). The following code snippet demonstrates several methods of the `XCO_CP` class that deal with string processing.
### Miscellaneous Classes for String Processing
The following list shows a selected set of classes that support string processing.
```abap
"--------- Extracting a substring from a string ---------
DATA(some_string) = `abcdefghijklmnopqrstuvwxyz`.
- `CL_ABAP_CHAR_UTILITIES`: As previously mentioned, this class provides utilities for string processing, such as attributes that represent new lines and horizontal tabs.
"Creating an encapsulation of a string using XCO
DATA(str) = xco_cp=>string( some_string ).
``` abap
DATA(tabbed) = `#` && cl_abap_char_utilities=>horizontal_tab && `#`.
"Using the FROM and TO methods, you can determine
"the character position. Note that the value includes the
"character at the position specified.
"The character index pattern for the example string above
"is (the string has 26 characters in total):
"a = 1, b = 2, c = 3 ... z = 26
"a = -26, b = -25, c = -24 ... z = -1
"Providing a value that is out of bounds means that
"the first (or the last) character of the string is used
"by default.
"Note: When combining FROM and TO, e.g. with method
"chaining ...->from( ...)->to( ... ), note that another
"instance is created with the first 'from', and another
"character index pattern is created based on the new
"and adjusted string value.
"The following attributes can be replaced by a representation of
"the control characters in a string template.
ASSERT cl_abap_char_utilities=>newline = |\n|.
ASSERT cl_abap_char_utilities=>horizontal_tab = |\t|.
ASSERT cl_abap_char_utilities=>cr_lf = |\r\n|.
```
"bcdefghijklmnopqrstuvwxyz
DATA(sub1) = str->from( 2 )->value.
- `CL_ABAP_STRING_UTILITIES`: For processing text strings, such as handling trailing blanks in character strings (i.e. data objects of type <code>string</code>).
"defghijklmnopqrstuvwxyz
DATA(sub2) = str->from( -23 )->value.
``` abap
DATA(string) = `ABAP `.
"Removing trailing blanks
cl_abap_string_utilities=>del_trailing_blanks( CHANGING str = string ).
"`ABAP`
"vwxyz
DATA(sub3) = str->from( -5 )->value.
"Preserving trailing blanks when assigning text fields to data objects of
"type string
DATA(chars) = 'ABAP '.
cl_abap_string_utilities=>c2str_preserving_blanks( EXPORTING source = chars
IMPORTING dest = DATA(str_w_blanks) ).
"`ABAP `
DATA(str_no_blanks) = CONV string( chars ).
"`ABAP`
```
"abcde
DATA(sub4) = str->to( 5 )->value.
- `XCO_CP`: The Extension Components Library (XCO) library provides [released APIs](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenreleased_api_glosry.htm) and offers various development utilities. Find more information [here](https://help.sap.com/docs/btp/sap-business-technology-platform/overview-of-xco-modules). The following code snippet demonstrates several methods of the class that deal with string processing.
"ab
DATA(sub5) = str->to( -25 )->value.
```abap
"--------- Extracting a substring from a string ---------
DATA(some_string) = `abcdefghijklmnopqrstuvwxyz`.
"Result of 1st 'from' method call: bcdefghijklmnopqrstuvwxyz
"Based on this result, the 'to' method call is
"applied.
"bcdefg
DATA(sub6) = str->from( 2 )->to( 6 )->value.
"Creating an encapsulation of a string using XCO
DATA(str) = xco_cp=>string( some_string ).
"Result of 1st 'to' method call: abcdefghijklmnopq
"Based on this result, the 'from' method call is
"applied.
"defghijklmnopq
DATA(sub7) = str->to( -10 )->from( 4 )->value.
"Using the FROM and TO methods, you can determine
"the character position. Note that the value includes the
"character at the position specified.
"The character index pattern for the example string above
"is (the string has 26 characters in total):
"a = 1, b = 2, c = 3 ... z = 26
"a = -26, b = -25, c = -24 ... z = -1
"Providing a value that is out of bounds means that
"the first (or the last) character of the string is used
"by default.
"Note: When combining FROM and TO, e.g. with method
"chaining ...->from( ...)->to( ... ), note that another
"instance is created with the first 'from', and another
"character index pattern is created based on the new
"and adjusted string value.
"Values that are out of bounds.
"In the example, the first and last character of the
"string are used.
"abcdefghijklmnopqrstuvwxyz
DATA(sub8) = str->from( 0 )->to( 100 )->value.
"bcdefghijklmnopqrstuvwxyz
DATA(sub1) = str->from( 2 )->value.
"--------- Splitting and joining ---------
"defghijklmnopqrstuvwxyz
DATA(sub2) = str->from( -23 )->value.
"Splitting a string into a string table
DATA(str_table) = xco_cp=>string( `Hello.World.ABAP` )->split( `.` )->value.
"Hello
"World
"ABAP
"vwxyz
DATA(sub3) = str->from( -5 )->value.
"Concatenating a string table into a string; specifying a delimiter
str_table = VALUE #( ( `a` ) ( `b` ) ( `c` ) ).
"a, b, c
DATA(conc_str1) = xco_cp=>strings( str_table )->join( `, ` )->value.
"abcde
DATA(sub4) = str->to( 5 )->value.
"Concatenating a string table into a string; specifying a delimiter and
"reversing the table order
"c / b / a
DATA(conc_str2) = xco_cp=>strings( str_table )->reverse( )->join( ` / ` )->value.
"ab
DATA(sub5) = str->to( -25 )->value.
"--------- Prepending and appending strings ---------
DATA(name) = xco_cp=>string( `Max Mustermann` ).
"Result of 1st 'from' method call: bcdefghijklmnopqrstuvwxyz
"Based on this result, the 'to' method call is
"applied.
"bcdefg
DATA(sub6) = str->from( 2 )->to( 6 )->value.
"Max Mustermann, Some Street 1, 12345 Someplace
DATA(address) = name->append( `, Some Street 1, 12345 Someplace` )->value.
"Result of 1st 'to' method call: abcdefghijklmnopq
"Based on this result, the 'from' method call is
"applied.
"defghijklmnopq
DATA(sub7) = str->to( -10 )->from( 4 )->value.
"Mr. Max Mustermann
DATA(title) = name->prepend( `Mr. ` )->value.
"Values that are out of bounds.
"In the example, the first and last character of the
"string are used.
"abcdefghijklmnopqrstuvwxyz
DATA(sub8) = str->from( 0 )->to( 100 )->value.
"--------- Transforming to lowercase and uppercase ---------
"ABAP
DATA(to_upper) = xco_cp=>string( `abap` )->to_upper_case( )->value.
"--------- Splitting and joining ---------
"hallo world
DATA(to_lower) = xco_cp=>string( `HALLO WORLD` )->to_lower_case( )->value.
"Splitting a string into a string table
DATA(str_table) = xco_cp=>string( `Hello.World.ABAP` )->split( `.` )->value.
"Hello
"World
"ABAP
"--------- Checking if a string starts/ends with a specific string ---------
DATA check TYPE string.
DATA(str_check) = xco_cp=>string( `Max Mustermann` ).
"Concatenating a string table into a string; specifying a delimiter
str_table = VALUE #( ( `a` ) ( `b` ) ( `c` ) ).
"a, b, c
DATA(conc_str1) = xco_cp=>strings( str_table )->join( `, ` )->value.
"yes
IF str_check->ends_with( `mann` ).
check = `yes`.
ELSE.
check = `no`.
ENDIF.
"Concatenating a string table into a string; specifying a delimiter and
"reversing the table order
"c / b / a
DATA(conc_str2) = xco_cp=>strings( str_table )->reverse( )->join( ` / ` )->value.
"no
IF str_check->starts_with( `John` ).
check = `yes`.
ELSE.
check = `no`.
ENDIF.
"--------- Prepending and appending strings ---------
DATA(name) = xco_cp=>string( `Max Mustermann` ).
"--------- Converting strings to xstrings using a codepage ---------
"536F6D6520737472696E67
DATA(xstr) = xco_cp=>string( `Some string` )->as_xstring( xco_cp_character=>code_page->utf_8 )->value.
"Max Mustermann, Some Street 1, 12345 Someplace
DATA(address) = name->append( `, Some Street 1, 12345 Someplace` )->value.
"--------- Camel case compositions and decompositions with split and join operations ---------
"Pascal case is also possible
"someValue
DATA(comp) = xco_cp=>string( `some_value` )->split( `_` )->compose( xco_cp_string=>composition->camel_case )->value.
"Mr. Max Mustermann
DATA(title) = name->prepend( `Mr. ` )->value.
"Camel case decomposition
"some_value
DATA(decomp) = xco_cp=>string( `someValue` )->decompose( xco_cp_string=>decomposition->camel_case )->join( `_` )->value.
"--------- Transforming to lowercase and uppercase ---------
"ABAP
DATA(to_upper) = xco_cp=>string( `abap` )->to_upper_case( )->value.
"--------- Matching string against regular expression ---------
DATA match TYPE string.
"hallo world
DATA(to_lower) = xco_cp=>string( `HALLO WORLD` )->to_lower_case( )->value.
"yes
IF xco_cp=>string( ` 1` )->matches( `\s\d` ).
match = 'yes'.
ELSE.
match = 'no'.
ENDIF.
"--------- Checking if a string starts/ends with a specific string ---------
DATA check TYPE string.
DATA(str_check) = xco_cp=>string( `Max Mustermann` ).
"no
IF xco_cp=>string( ` X` )->matches( `\s\d` ).
match = 'yes'.
ELSE.
match = 'no'.
ENDIF.
```
"yes
IF str_check->ends_with( `mann` ).
check = `yes`.
ELSE.
check = `no`.
ENDIF.
"no
IF str_check->starts_with( `John` ).
check = `yes`.
ELSE.
check = `no`.
ENDIF.
"--------- Converting strings to xstrings using a codepage ---------
"536F6D6520737472696E67
DATA(xstr) = xco_cp=>string( `Some string` )->as_xstring( xco_cp_character=>code_page->utf_8 )->value.
"--------- Camel case compositions and decompositions with split and join operations ---------
"Pascal case is also possible
"someValue
DATA(comp) = xco_cp=>string( `some_value` )->split( `_` )->compose( xco_cp_string=>composition->camel_case )->value.
"Camel case decomposition
"some_value
DATA(decomp) = xco_cp=>string( `someValue` )->decompose( xco_cp_string=>decomposition->camel_case )->join( `_` )->value.
"--------- Matching string against regular expression ---------
DATA match TYPE string.
"yes
IF xco_cp=>string( ` 1` )->matches( `\s\d` ).
match = 'yes'.
ELSE.
match = 'no'.
ENDIF.
"no
IF xco_cp=>string( ` X` )->matches( `\s\d` ).
match = 'yes'.
ELSE.
match = 'no'.
ENDIF.
```
<p align="right"><a href="#top">⬆️ back to top</a></p>

18
08_EML_ABAP_for_RAP.md
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@@ -823,8 +823,8 @@ Bullet points on selected `%` components:
draft scenario. In doing so, you can avoid lots of adaptations
in your code by manually adding the indicator.
- [`%control`](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abapderived_types_control.htm)
- Component group that contains the names of all key
and data fields of a RAP BO instance which indicate flags.
- Structured component that is a component of many BDEF derived types. It contains the names of all key
and data fields of a RAP BO instance, which indicate flags.
- For example, it is used to get information on which fields are provided or set a
flag for which fields are requested by RAP BO providers or RAP
BO consumers respectively during the current EML request.
@@ -1072,10 +1072,7 @@ created for the root entity. Then, in the same request, instances are
created for the child entity based on the root instance. In the example
below, the assumption is that a composition is specified in the root
view entity like `composition [1..*] of root_ent as _child` and `key_field` and
`key_field_child` are the keys of the child view entity. The
[`%target`](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abapderived_types_target.htm)
component group enters the picture here which contains the target's
primary key and data fields.
`key_field_child` are the keys of the child view entity. The structured component [`%target`](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abapderived_types_target.htm) enters the picture here which contains the target's primary key and data fields.
``` abap
MODIFY ENTITIES OF root_ent
ENTITY root_ent
@@ -1291,7 +1288,10 @@ MODIFY ENTITIES OF root_ent
ENTITY root_ent
CREATE FIELDS ( key_field field1 field2 ) WITH
VALUE #( ( %cid = 'cid' key_field = 7
field1 = 'K' field2 = 'L' ) ).
field1 = 'K' field2 = 'L' ) )
MAPPED DATA(mapped)
FAILED DATA(failed)
REPORTED DATA(resp).
COMMIT ENTITIES.
@@ -1578,10 +1578,10 @@ contains all relevant components for the chosen scenario.
> in which the final key values are assigned; the preliminary keys can
> be included in `%key` or `%pid` or both of them.
>- `%pid` and the preliminary key values in `%key` are
> automatically assigned to the following component groups when
> automatically assigned to the following components when
> reaching the `adjust_numbers` method:
> - [`%tmp`](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abapderived_types_tmp.htm):
> A component group that is assigned the preliminary key values
> A component that is assigned the preliminary key values
> contained in `%key`. In doing so, `%tmp` takes
> over the role that `%key` has had in the RAP interaction
> phase to hold the preliminary key values.

8
16_Data_Types_and_Objects.md
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@@ -40,8 +40,12 @@ Data types
- Can occur in [ABAP programs](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenabap_program_glosry.htm) as [bound data types](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenbound_data_type_glosry.htm), that is, the type is a property of a data object, or as a [standalone data type](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenstand-alone_data_type_glosry.htm), that is, the data type is defined independently.
- Can be defined locally in an ABAP program or globally in classes, interfaces and in the [ABAP Dictionary (DDIC)](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenabap_dictionary_glosry.htm).
> **💡 Note**<br>
> - Note: Data types in the ABAP Dictionary are either created directly as [repository objects](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenrepository_object_glosry.htm) ([DDIC data elements](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abendata_element_glosry.htm)) or in a type pool (only in [Standard ABAP](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenstandard_abap_glosry.htm)). [Database tables](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abendatabase_table_glosry.htm), [CDS entities](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abencds_entity_glosry.htm) and their components can also be used as data types in ABAP programs.
> - Their existence and visibility depends on the declaration context.
> Global data types are created as [repository objects](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenrepository_object_glosry.htm) in the ABAP Dictionary:
> - DDIC types such as [DDIC data elements](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abendata_element_glosry.htm) (elementary data types or reference types), [DDIC structures](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenddic_structure_glosry.htm), [DDIC table types](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenddic_table_type_glosry.htm).
> - Furthermore, [database tables](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abendatabase_table_glosry.htm) and [CDS entities](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abencds_entity_glosry.htm) and their components can also be used as data types in ABAP programs.
>
> Data types declared in interfaces and in the public visibility section of global classes are also globally visibile. Global classes and interfaces as such are global types to refer to. In [classic ABAP](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenclassic_abap_glosry.htm), global data types can also be created in [type pools](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abentype_pool_glosry.htm). Find more information [here](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenddic_data_types.htm).
Data objects:
- Are objects (or [instances](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abeninstance_glosry.htm)) of a data type (similar to objects/instances of classes in [ABAP Objects](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenabap_objects_glosry.htm)).

16
19_ABAP_for_Cloud_Development.md
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@@ -3,16 +3,16 @@
# ABAP for Cloud Development
- [ABAP for Cloud Development](#abap-for-cloud-development)
- [Terms](#terms)
- [Excursions](#excursions)
- [More Information](#more-information)
- [Executable Example](#executable-example)
- [Terms](#terms)
- [Excursions](#excursions)
- [More Information](#more-information)
- [Executable Example](#executable-example)
This ABAP cheat sheet briefly outlines the terms ABAP Cloud and classic ABAP to get an idea about [ABAP for Cloud Development](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenabap_for_cloud_dev_glosry.htm).
It provides references to more detailed information on the topic.
# Terms
## Terms
- ABAP Cloud
- Progamming paradigm for state-of-the-art, cloud-ready and upgrade-stable solutions
@@ -41,7 +41,7 @@ It provides references to more detailed information on the topic.
<p align="right"><a href="#top">⬆️ back to top</a></p>
# Excursions
## Excursions
1) If available to you, you have accessed an SAP BTP ABAP environment using ADT.
@@ -155,7 +155,7 @@ It provides references to more detailed information on the topic.
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# More Information
## More Information
- Devtoberfest sessions
- [Overview of ABAP Cloud](https://www.youtube.com/watch?v=ApZSn_t_WSo)
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# Executable Example
## Executable Example
[zcl_demo_abap_cloud_excursion](./src/zcl_demo_abap_cloud_excursion.clas.abap)
> **💡 Note**<br>