Here, END-IF is the scope terminator, which is optional in the program. The period (.) can be defined at the last statement of IF block.If we didn't specify the period, then scope terminator END-IF is mandatory.IF ELSEIF ELSE statement is used when a certain set of statements needed...
This group of control statements enables to select at run-time, which block of code is executed. To make this selection based on whether a statement is true or false, use the if statement (which may include else or elseif). To select from several possible options depending on the value o...
RxJS defaultIfEmpty() operator is a conditional operator used to emit a given value if the source observable completes without emitting any next value. Otherwise, it mirrors the source observable. It returns the values emitted by the source observable or a specified default value if the source obs...