codesnips

errors

python 
# Optional: custom error handlers
handler404 = 'myapp.views.custom_404'
handler500 = 'myapp.views.custom_500'


# In views.py

Django custom error pages (404, 500)

django python templates
by Priya Sharma 3 tabs
go 
package domain

import (
  "errors"
  "fmt"
)

Error wrapping that stays inspectable with errors.Is and errors.As

go errors api
by Leah Thompson 1 tab
ruby 
class AddressForm
  include ActiveModel::Model
  include ActiveModel::Attributes

  attribute :line1, :string
  attribute :line2, :string

Rails Nested Address Form Object With Aggregated ActiveModel Errors

rails activemodel form-object
by codesnips 3 tabs
go 
package cleanup

import "errors"

func CloseAll(closers ...func() error) error {
  var errs []error

errors.Join for cleanup (surface multiple close failures)

go errors reliability
by Leah Thompson 1 tab