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I'm looking at this snippet of code:
It's typescript. On the first line there is:
... return of (true); What's this syntax?
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return statement syntaxreturn ( expression ) ; A value-returning function should include a return statement, containing an expression. If an expression is not given on a return statement in a function declared with a non- void return type, the compiler issues a warning message.
Answer: R returns the last output of a function automatically. We therefore do not need to use the return explicitly. However, using the return command is often considered as good practice, since it makes the R code easier to read and understand.
return() in Python The return() statement, like in other programming languages ends the function call and returns the result to the caller. It is a key component in any function or method in a code which includes the return keyword and the value that is to be returned after that.
The return statement is used to return value. When a program calls a function, the program control is transferred to the called function. The following is an example to learn about the usage of return statement in C#.
The syntax of a return statement is the return keyword is followed by the value to be returned. The following Java programs demonstrate the use of return statements. System.out.println ("The greater number among x and y is: " + result);
This syntax is used in function just as a jump statement in order to break the flow of the function and jump out of it. One can think of it as an alternative to “ break statement ” to use in functions. But if the return statement tries to return a value in a void return type function, that will lead to errors.
Python return statement. A return statement is used to end the execution of the function call and “returns” the result (value of the expression following the return keyword) to the caller.
The following return statements all break the function execution: The return statement is affected by automatic semicolon insertion (ASI). No line terminator is allowed between the return keyword and the expression. is transformed by ASI into: The console will warn "unreachable code after return statement".
Most of the short function names in this snippet are RxJS operators.
Instead of:
Observable.of()Observable.from()Observable.mergeMap()You have:
of()from()mergeMap()Look at the top of the snippet, you should see the imports for these RxJS operators.
Note that this is NOT the usual practice (I think it makes the code harder to read).
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