Basic types
This topic lists the basic types that are defined in F#. These types are the most fundamental in F#, forming the basis of nearly every F# program. They are a superset of .NET primitive types.
Type | .NET type | Description | Example |
---|---|---|---|
bool |
Boolean | Possible values are true and false . |
true /false |
byte |
Byte | Values from 0 to 255. | 1uy |
sbyte |
SByte | Values from -128 to 127. | 1y |
int16 |
Int16 | Values from -32768 to 32767. | 1s |
uint16 |
UInt16 | Values from 0 to 65535. | 1us |
int |
Int32 | Values from -2,147,483,648 to 2,147,483,647. | 1 |
uint |
UInt32 | Values from 0 to 4,294,967,295. | 1u |
int64 |
Int64 | Values from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. | 1L |
uint64 |
UInt64 | Values from 0 to 18,446,744,073,709,551,615. | 1UL |
nativeint |
IntPtr | A native pointer as a signed integer. | nativeint 1 |
unativeint |
UIntPtr | A native pointer as an unsigned integer. | unativeint 1 |
decimal |
Decimal | A floating point data type that has at least 28 significant digits. | 1.0m |
float , double |
Double | A 64-bit floating point type. | 1.0 |
float32 , single |
Single | A 32-bit floating point type. | 1.0f |
char |
Char | Unicode character values. | 'c' |
string |
String | Unicode text. | "str" |
unit |
not applicable | Indicates the absence of an actual value. The type has only one formal value, which is denoted () . The unit value, () , is often used as a placeholder where a value is needed but no real value is available or makes sense. |
() |
Note
You can perform computations with integers too big for the 64-bit integer type by using the bigint
type. bigint
is not considered a basic type; it is an abbreviation for System.Numerics.BigInteger
.
See also
Cộng tác với chúng tôi trên GitHub
Bạn có thể tìm thấy nguồn cho nội dung này trên GitHub, nơi bạn cũng có thể tạo và xem lại các vấn đề và yêu cầu kéo. Để biết thêm thông tin, hãy xem hướng dẫn dành cho người đóng góp của chúng tôi.