topic Re: Boolean statement in Application Development and Automation Discussions

Boolean statement

Former Member — Thu, 16 Nov 2006 14:42:40 GMT

Hello,

I am wondering how do you write a boolean statment in ABAP. I tried to do something like this below:


bool = text1 IS initial OR text2 IS initial.

where text1 and text2 are text boxes in the selection screen.

And I ended up having error like this:

Incorrect arithmetic or bit expression: Instead of "IS", an operator (+, -, *, /, ... or BIT-AND, BIT-XOR, BIT-OR) was expected.

What is wrong with the statement above? Thanks!

Regards,

Anyi

Re: Boolean statement

Former Member — Thu, 16 Nov 2006 14:47:26 GMT

IF TEXT1 IS INITIAL OR
    TEXT2 IS INITIAL.
* Do something
ENDIF

Max

Re: Boolean statement

Former Member — Thu, 16 Nov 2006 14:49:46 GMT

Hullo,

IIRC there is no such thing as a boolean in ABAP.

However, you can solve this using an IF statement:

DATA: bool(1) TYPE c.

IF text1 IS INITIAL OR text2 IS INITIAL.
  bool = 'T'  .
ELSE.
  bool = 'F'.
ENDIF.

Where the values 'T' stands for true and 'F' stands for false. (Usually in ABAP the value for true is 'X' and ' ' for false though).

Hope this helps.

Re: Boolean statement

Former Member — Thu, 16 Nov 2006 14:50:27 GMT

if text1 is initial or

text2 is inital.

ensid

Re: Boolean statement

RichHeilman — Thu, 16 Nov 2006 14:57:10 GMT

Really there is no boolean in ABAP, it is just a TYPE C field with either an "X" or a SPACE. But you can write something like this.



report zrich_0001.

type-pools: abap.

constants: true type abap_bool value 'X'.
constants: false type abap_bool value ' '.

data:  value type c.


if value = true.

elseif value = false.

endif.

Regards,

Rich Heilman

Re: Boolean statement

Former Member — Thu, 16 Nov 2006 15:00:10 GMT

hi Anyi,

There is no boolean type defined in ABAP like any other language.

Boolean hold the value true or false - all those cases where you need to check you can use if else statement. ie

if (Condition1 is true)
 //code....111
else.
 //code...222
endif.

This is the way to handle the use of boolean in ABAP. Actually ABAP does not need boolean datatype.

Regards,

Richa.