When developers wants to check a Boolean return of a method in ABAP prior to NetWeaver 7.4, there was a need to compare it against value 'X' , but in NetWeaver 7.4, Boolean check is simpler and it is very much like other programming languages.
Boolean check before ABAP 7.4
IF ZCL_CHECK_BOOLEAN=>IS_VALID( ) = 'X'. WRITE:/ 'Is Valid'. ENDIF.
Boolean check after ABAP 7.4
IF ZCL_CHECK_BOOLEAN=>IS_VALID( ). WRITE:/ 'Is Valid'. ENDIF.
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