RxJS | map(), mergeMap(), concatMap(), switchMap(), exhaustMap() | In Tamil, English Subtitled

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00:00 - Introduction
00:48 - Brief about Observable in RxJs
03:01 - Example for mapping operators
04:58 - What is map() operator in RxJs
06:29 - Why mergeMap() & benefit of it.
08:04 - Restaurant example for mapping operators.
10:27 - Summarize mergeMap(), concatMap(), switchMap(), exhaustMap()
13: 40 - Behavior of mergeMap() with example
15:35 - Behavior of concatMap() with example
16:21 - Behavior of switchMap() with example
17:39 - Behavior of exhaustMap() with example
18:52 - Coding examples of mergeMap(), concatMap(), switchMap(), exhaustMap()
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If I am using the SwitchMap and If I need the output of the first API call's response to pass into the second API call as a parameter, will the first API call will be lost after the second API hits?

sathyamoorthyga