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Hints #123

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Mike Pokraka
2022-04-05 10:11:11 +01:00
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exercises/practice/custom-signs/.docs/hints.md
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## General
### 1. Build an occasion sign
- [String Templates][sap-string-templates] are a [String Expression](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abapcompute_string.htm) type that allows for insertion of one or more [embedded expressions][sap-embed-expr] in strings.
### 2. Build a birthday sign
- [String Templates][sap-string-templates] allow for insertion of one or more [embedded expressions][sap-embed-expr] in strings.
- Optional: The [COND Conditional Operator][sap-cond-operator] is a short-hand way of embedding a condition into an expression. Since we can embed expressions in string templates, we can do away with an `IF...ELSE...ENDIF` construct altogether.
### 3. Build a graduation sign
- String Templates also allow insertion of [Control Characters](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenstring_templates_separators.htm), a shorter form of the [`cl_abap_char_utilities`](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abencl_abap_char_utilities.htm) class constants some ABAPers may be used to.
### 4. Compute the cost of a sign
- Built in string description functiond can help to figure out the [length](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenlength_functions.htm) of the sign.
- Figure out the length [length](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenlength_functions.htm) of the sign.
- String Template [embedded expressions][sap-embed-expr] can also include [formatting options](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abapcompute_string_format_options.htm). These can be helpful to show only an output with a fixed number of decimals.
[sap-string-templates]: https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenstring_templates.htm