RXJS and Ionic- Sequencial Subscriptions Waiting on User Action
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In an Ionic App a user can open a new browser via "inAppBrowser". I'm trying to get the stats of the user before they go into to the inAppBrowser, get the stats again when browser closes, and then run a function to compare the before and after.
What I have right now is working but I feel like I'm not doing it the proper RXJS way and I want to make sure I do this right. Is this a case for using MergeMap or is that making it needlessly complicated? Do I need to worry about possible race conditions?
Code Snippet:
let previousStats =
this.reloadStats(user)
.pipe(
first(), // getting only the first because I dont want this to update
tap(val => {
previousStats = val //setting the stats before the user leaves
})
)
.subscribe()
const browser = this.inAppBrowser.create(user.url) //user opens a browser
this.subscriptionUserUrl = browser.on('exit') // user closes the browser
.switchMap(() => this.reloadStats(user)) // get the most latest stats
.subscribe(currentStats =>{
this.handleBrowserExit(previousStats, currentStats) // do the comparison
})
typescript observer-pattern rxjs
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In an Ionic App a user can open a new browser via "inAppBrowser". I'm trying to get the stats of the user before they go into to the inAppBrowser, get the stats again when browser closes, and then run a function to compare the before and after.
What I have right now is working but I feel like I'm not doing it the proper RXJS way and I want to make sure I do this right. Is this a case for using MergeMap or is that making it needlessly complicated? Do I need to worry about possible race conditions?
Code Snippet:
let previousStats =
this.reloadStats(user)
.pipe(
first(), // getting only the first because I dont want this to update
tap(val => {
previousStats = val //setting the stats before the user leaves
})
)
.subscribe()
const browser = this.inAppBrowser.create(user.url) //user opens a browser
this.subscriptionUserUrl = browser.on('exit') // user closes the browser
.switchMap(() => this.reloadStats(user)) // get the most latest stats
.subscribe(currentStats =>{
this.handleBrowserExit(previousStats, currentStats) // do the comparison
})
typescript observer-pattern rxjs
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
In an Ionic App a user can open a new browser via "inAppBrowser". I'm trying to get the stats of the user before they go into to the inAppBrowser, get the stats again when browser closes, and then run a function to compare the before and after.
What I have right now is working but I feel like I'm not doing it the proper RXJS way and I want to make sure I do this right. Is this a case for using MergeMap or is that making it needlessly complicated? Do I need to worry about possible race conditions?
Code Snippet:
let previousStats =
this.reloadStats(user)
.pipe(
first(), // getting only the first because I dont want this to update
tap(val => {
previousStats = val //setting the stats before the user leaves
})
)
.subscribe()
const browser = this.inAppBrowser.create(user.url) //user opens a browser
this.subscriptionUserUrl = browser.on('exit') // user closes the browser
.switchMap(() => this.reloadStats(user)) // get the most latest stats
.subscribe(currentStats =>{
this.handleBrowserExit(previousStats, currentStats) // do the comparison
})
typescript observer-pattern rxjs
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
In an Ionic App a user can open a new browser via "inAppBrowser". I'm trying to get the stats of the user before they go into to the inAppBrowser, get the stats again when browser closes, and then run a function to compare the before and after.
What I have right now is working but I feel like I'm not doing it the proper RXJS way and I want to make sure I do this right. Is this a case for using MergeMap or is that making it needlessly complicated? Do I need to worry about possible race conditions?
Code Snippet:
let previousStats =
this.reloadStats(user)
.pipe(
first(), // getting only the first because I dont want this to update
tap(val => {
previousStats = val //setting the stats before the user leaves
})
)
.subscribe()
const browser = this.inAppBrowser.create(user.url) //user opens a browser
this.subscriptionUserUrl = browser.on('exit') // user closes the browser
.switchMap(() => this.reloadStats(user)) // get the most latest stats
.subscribe(currentStats =>{
this.handleBrowserExit(previousStats, currentStats) // do the comparison
})
typescript observer-pattern rxjs
typescript observer-pattern rxjs
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 3 hours ago
gv0000gv0000
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New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
gv0000 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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