Types and Type Declarations Providing types when importing Providing types when hosting Using the triple-slash reference directive Using X-TypeScript-Types header Using ambient...
More about types Types and sets (and Any and Union{}/Bottom) UnionAll types Free variables TypeNames Tuple types Diagonal types Subtyping diagonal variables Introduction to ...
Types of empty collections Types of empty collections You often need to specify the type when you assign an empty list ordict to a new variable, as mentioned earlier: a : Li...
Variance of generic types Variance of generic types There are three main kinds of generic types with respect to subtyperelations between them: invariant, covariant, and contrav...
Callable types (and lambdas) Callable types (and lambdas) You can pass around function objects and bound methods in staticallytyped code. The type of a function that accepts ar...
Compatibility of container types Compatibility of container types The following program generates a mypy error, since List[int] is not compatible with List[object] : def f ( ...
Explicit types for variables Explicit types for variables You can override the inferred type of a variable by using avariable type annotation: from typing import Union ...
Zero Bit Types void Pointers to Zero Bit Types Zero Bit Types For some types, @sizeOf is 0: void The Integers u0 and i0 . Arrays and Vectors with len 0, or with an ...
1.7 Enum Types 1.7 Enum Types TypeScript enables programmers to summarize a set of numeric constants as an enum type. The example below creates an enum type to represent operat...