• auto-complete for resources in vs code
• Parameters can be added with param block
  • Decorators can be added with @ (Things like min/max length)
    • @allowed
    • description can also be added
    • @secure - for passwords/secure strings, etc
      • Don’t use [[202407191915 Bicep parameter files|Parameter files]] for secrets
      • use [[202407191923 Azure Key Vault|Azure key vault]]
• Implicit dependency between resources by using the id of a resource created earlier, example id of [[202404201400 Azure App service#App service plan]] when defining [[202404201400 Azure App service|app service]]
• output keyword to send output
• param types : string, int, bool, object and array
• 3 ways to define parameters (in order of priority least->most)
  • default
  • [[202407191915 Bicep parameter files|parameter file]]
  • command-line

param Identifier Type = DefaultValue

# Examples
param appServiceAppName string
param appServiceAppName string = 'toy-product-launch-1'

@allowed([
  'nonprod'
  'prod'
])
param environmentType string

## Based on the above, create a var which will set sku based on environment
# ? is if else , true then first things, false then after : thing
var storageAccountSkuName = (environmentType == 'prod') ? 'Standard_GRS' : 'Standard_LRS'
var appServicePlanSkuName = (environmentType == 'prod') ? 'P2V3' : 'F1'

Expressions

When writing templates we don’t want to hard-code anything. So use expressions.

# Example
param location string = resourceGroup().location

# Another Example
param storageAccountName string = uniqueString(resourceGroup().id)

Unique string will give unique string but it will not be so readable. So string extrapolation.

param storageAccountName string = 'toylaunch${uniqueString(resourceGroup().id)}'

Objects

• create an object type param to specify structured data together

param appServicePlanSku object = {
  name: 'F1'
  tier: 'Free'
  capacity: 1
}

• can be used in dot notations

resource appServicePlan 'Microsoft.Web/serverfarms@2022-03-01' = {
  name: appServicePlanName
  location: location
  sku: {
    name: appServicePlanSku.name
    tier: appServicePlanSku.tier
    capacity: appServicePlanSku.capacity
  }
}

• Useful for specifying tags

Array

list of things. strings, or objects

# List of objects
param cosmosDBAccountLocations array = [
  {
    locationName: 'australiaeast'
  }
  {
    locationName: 'southcentralus'
  }
  {
    locationName: 'westeurope'
  }
]

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references: