[RxJS] Transformation Operator:buffer, BufferCount, BufferTime

This lesson would teach you on another horizontal combination operator:buffer and its variants. Buffer groups consecutive values together, emitting the output as an array. The buffer variants and their arguments allow-specify when to close the buffers.

Buffer (Close observable): According to another observalbe to group items.

varFoo = Rx.Observable.of (' h ', ' e ', ' l ', ' l ', ' O '). zip (Rx.Observable.interval (Take (5), (x, y) =x);varBar = Rx.Observable.interval (in). Take (3);/*-----H-----E-----L-----L-----o|          (foo)--------0--------1--------2| (bar) buffer (bar)--------H--------e--------ll|*/varresult =Foo.buffer (bar); Result.subscribe (function(x) {Console.log (' next ' +x); },  function(ERR) {console.log (' error ' +err); },  function() {console.log (' done '));    },); /*"Next H" "Next E" "next L,l" "Done"*/

BufferTime (number):

varFoo = Rx.Observable.of (' h ', ' e ', ' l ', ' l ', ' O '). zip (Rx.Observable.interval (Take (5), (x, y) =x);/*-----H-----E-----L-----L-----o|          (foo)--------x--------x--------x| (900ms) bufferTime--------h--------e--------ll|*/varresult = Foo.buffertime (900); Result.subscribe (function(x) {Console.log (' next ' +x); },  function(ERR) {console.log (' error ' +err); },  function() {console.log (' done '));    },); /*"Next H" "Next E" "next L,l" "Done"*/

BufferCount (number):

varFoo = Rx.Observable.of (' h ', ' e ', ' l ', ' l ', ' O '). zip (Rx.Observable.interval (Take (5), (x, y) =x);/*-----H-----E-----L-----L-----o| (foo) bufferCount (2)----------([h,e])------([l,l]) ([o|]) L*/varresult = Foo.buffercount (2); Result.subscribe (function(x) {Console.log (' next ' +x); },  function(ERR) {console.log (' error ' +err); },  function() {console.log (' done '));    },); /*"Next H,e" "Next l,l" "Next O" "Done"*/

[RxJS] Transformation Operator:buffer, BufferCount, BufferTime