Efficiency of multiple requests vs one large request

I am working on an analytics dashboard where the user can select between different chart timelines; a week, month, and year. The data on the server is somewhat complicated and nested, (using mongoDB) but in this form. [ {date: “2019-12-08T13:55:24.726-06:00”, otherData: …}, {date: “2019-12-09T13:55:24.726-06:00”, otherData: …}, {date: “2019-12-10T13:55:24.726-06:00”, otherData: …}, ] Each object has a…

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S3+CloudFront CORS issue on server

My server is hosted on AWS EC2, it’s an Ubuntu Server with Nginx. In addition I also have an S3 bucket configured with following CORS: <CORSConfiguration xmlns=”http://s3.amazonaws.com/doc/2006-03-01/”> <CORSRule> <AllowedOrigin>*</AllowedOrigin> <AllowedMethod>GET</AllowedMethod> <AllowedMethod>HEAD</AllowedMethod> <MaxAgeSeconds>3000</MaxAgeSeconds> <AllowedHeader>*</AllowedHeader> </CORSRule> </CORSConfiguration> And my CloudFront (which points to this bucket) has the following headers allowed: Access-Control-Request-Headers Access-Control-Request-Methods Origin CloudFront caches GET,HEAD,OPTIONS and…

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How to change a Bitmap icon of a Marker based on a Boolean stored in Firebase

I would like the marker icon to change when the value in the database changes. (I would like to add more markers later, which change in the same way but due to different values from the database.) I tried it like this: @Override public void onLocationChanged(Location location) { Bitmap MarkerUserRed = BitmapFactory.decodeResource(getResources(),R.drawable.userIconRed); Bitmap MarkerUserBlue =…

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How to convert a concrete integer into a generic integer?

I have the following function: use std::collections::HashMap; use num::traits::Unsigned; fn test<T: Unsigned>(strings: Vec<String>) -> HashMap<String, T>{ let mut string_map: HashMap<String, T> = HashMap::new(); for (i, string) in strings.iter().enumerate() { string_map.insert(string.clone(), i); } string_map } that causes the following compilation error: error[E0308]: mismatched types –> src/main.rs | | string_map.insert(string.clone(), i); | ^ expected type parameter, found…

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