Another idiom I wish were gone from phobos/druntime

[bearophile via Digitalmars-d]

Ola Fosheim Grøstad:

> Ada with SPARK 2014 makes D look like it is stuck in the 80s:
>
> 4.2. Subprogram Contracts
> 4.2.1. Preconditions
> 4.2.2. Postconditions
> 4.2.3. Contract Cases
> 4.2.4. Data Dependencies
> 4.2.5. Flow Dependencies
> 4.2.6. State Abstraction and Contracts
> 4.2.6.1. State Abstraction and Dependencies
> 4.2.6.2. State Abstraction and Functional Contracts
> 4.3. Package Contracts
> 4.3.1. State Abstraction
> 4.3.2. Package Initialization
> 4.3.3. Package Initial Condition
> 4.3.4. Interfaces to the Physical World
> 4.3.4.1. Volatile Variables
> 4.3.4.2. Flavors of Volatile Variables
> 4.3.4.3. External State Abstraction
> 4.4. Type Contracts
> 4.4.1. Scalar Ranges
> 4.4.2. Static Predicates
> 4.4.3. Record Discriminants
> 4.4.4. Default Initial Condition
> 4.5. Specification Features
> 4.5.1. Attribute Old
> 4.5.1.1. In a Postcondition
> 4.5.1.2. In Contract Cases
> 4.5.1.3. In a Potentially Unevaluated Expression
> 4.5.2. Attribute Result
> 4.5.3. Attribute Loop_Entry
> 4.5.4. Attribute Update
> 4.5.5. Conditional Expressions
> 4.5.6. Quantified Expressions
> 4.5.7. Expression Functions
> 4.5.8. Ghost Code
> 4.5.8.1. Ghost Functions
> 4.5.8.2. Ghost Variables
> Case 1: Keeping Intermediate Values
> Case 2: Keeping Memory of Previous State
> Case 3: Logging Previous Events
> 4.5.8.3. Ghost Types
> 4.5.8.4. Ghost Procedures
> 4.5.8.5. Ghost Packages
> 4.5.8.6. Imported Ghost Subprograms
> 4.6. Assertion Pragmas
> 4.6.1. Pragma Assert
> 4.6.2. Loop Invariants
> 4.6.3. Loop Variants
> 4.6.4. Pragma Assume
> 4.6.5. Pragma Assert_And_Cut

That seems a bit too much for the average human to handle :-)
Sometimes features help, but that list seems excessive for a 
language that is not meant for high integrity systems as D.

Bye,
bearophile