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Type段
Type段 Type段 示例： type # 演示相互递归类型的示例 Node = ref object # 垃圾收集器管理的对象（ref） le , ri : Node # 左右子树 sym : ref Sym # 叶节点含有Sym的引用 Sy... -
DROP TYPE
DROP TYPE Synopsis Syntax drop_type Semantics drop_type type_name Examples See also DROP TYPE Synopsis Use the DROP TYPE statement to remove a user-defined type from... -
CREATE TYPE
CREATE TYPE Synopsis Description Parameters Notes Examples Compatibility See Also CREATE TYPE Defines a new data type. Synopsis CREATE TYPE <name> AS ( <attribut... -
Type Query
Type Query Deprecated in 7.0.0. Type Query Deprecated in 7.0.0. Types and the type query are deprecated and in the process of being removed. See Removal of mapping types . ... -
_type field
_type field Deprecated in 6.0.0. _type field Deprecated in 6.0.0. See Removal of mapping types Each document indexed is associated with a _type and an _id . The _type... -
Type casts
Type casts Type casts Type casts are a crude mechanism to interpret the bit pattern of an expression as if it would be of another type. Type casts are only needed for low-leve... -
Type Conversion
Type Conversion Functions Common Issues of Numeric Conversions toInt(8|16|32|64) toInt(8|16|32|64)OrZero toInt(8|16|32|64)OrNull toUInt(8|16|32|64) toUInt(8|16|32|64)OrZero t... -
Type system
The Dart type system What is soundness? The benefits of soundness Tips for passing static analysis Use sound return types when overriding methods Use sound parameter types when ... -
Type inference
Type inference With type restrictions Without type restrictions 1. Assigning a literal value 2. Assigning the result of invoking the class method new 3. Assigning a variable th... -
Type system
The Dart type system What is soundness? The benefits of soundness Tips for passing static analysis Use sound return types when overriding methods Use sound parameter types when ...