AWS CloudFormation Concepts Condition Functions: Difference between revisions
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=Expressions= | =Expressions= | ||
Expressions can use [[AWS_CloudFormation_Concepts#Pseudo-Parameters|pseudo-parameters]] | Expressions can use [[AWS_CloudFormation_Concepts#Pseudo-Parameters|pseudo-parameters]], [[AWS_CloudFormation_Concepts#Input_Parameters_.28Template_Parameters.29|template input parameters]] and [[AWS_CloudFormation_Concepts#Mappings|mappings]]. Expressions are useful when declaring [[AWS_CloudFormation_Concepts#Conditions|Conditions]]. Other conditions can be referenced within conditions. | ||
Revision as of 18:03, 18 April 2019
External
Internal
Overview
As it is the case for intrinsic functions, condition functions have a full function name, and a short form. For more details see:
Fn::If: !If
Fn::And: !And
Fn::Equals: !Equals
!Equals ['something', !Ref SomethingElse]
Fn::Not: !Not
Fn::Or: !Or
Expressions
Expressions can use pseudo-parameters, template input parameters and mappings. Expressions are useful when declaring Conditions. Other conditions can be referenced within conditions.