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If you want to be more Linq-like without creating a ForEach method: vehicles = vehicles .Select( v => new Vehicle { Make = v.Make, ...
Answer
#2: Post edited
by
Andrew Shepherd
·
2021-03-09T23:08:22Z (about 3 years ago)
- If you want to be more Linq-like without creating a `ForEach` method:
- ````
- vehicles = vehicles
- .Select(
- v =>
- new Vehicle
- {
- Make = v.Make,
- VIN = v.VIN,
- Color = v.Color,
- HsRegistration = vinList.Contains(v.VIN)
- }
- ).ToList();
- ````
Here we're treating `Vehicle` and the list like immutable objects, and creating modified copies rather than mutating them.
- If you want to be more Linq-like without creating a `ForEach` method:
- ````
- vehicles = vehicles
- .Select(
- v =>
- new Vehicle
- {
- Make = v.Make,
- VIN = v.VIN,
- Color = v.Color,
- HsRegistration = vinList.Contains(v.VIN)
- }
- ).ToList();
- ````
- Here we're treating `Vehicle` and the list like immutable objects, and creating modified copies rather than mutating them.
- Can you make Vehicle a `record` rather than a `class`?
- ````
- record VehicleRecord
- {
- internal string Make;
- internal string VIN;
- internal string Color;
- internal bool HasRegistration;
- }
- ````
- If so you can simplify this to:
- ````
- vehicles = vehicles
- .Select(
- v => v with { HasRegistration = vinList.Contains(v.VIN) }
- ).ToList();
- ````
#1: Initial revision
by
Andrew Shepherd
·
2021-03-09T10:38:36Z (about 3 years ago)
If you want to be more Linq-like without creating a `ForEach` method:
````
vehicles = vehicles
.Select(
v =>
new Vehicle
{
Make = v.Make,
VIN = v.VIN,
Color = v.Color,
HsRegistration = vinList.Contains(v.VIN)
}
).ToList();
````
Here we're treating `Vehicle` and the list like immutable objects, and creating modified copies rather than mutating them.