# Packages
# README
The «dp» programming language
The language uses imperative style. Its features are designed to work together so that memory management can be automatic, simple and fast.
The language has null (nil) pointers. Memory access operations don't require elaborate syntax.
The dpfmt formatting tool is very lenient. Therefore source code files stay
consistently formatted, but it's easy to write them.
Details
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Type names start with an upper-case letter and consist of upper- and lower-case letters.
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Function and variable names consist of lower-case letters and non-consecutive underscores.
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Only fixed-size primitive types:
Bool,I8,I16,I32,I64,U8,U16,U32,U64,F32,F64. Expressions can yield unnamed integer types with arbitrary bit width; they must be converted to a named type when assigning to an explicitly typed variable, parameter or return value. -
Generic variable-length array type:
[T]. -
Zero value literals:
0,{},nil, and_. -
Struct types with methods. Field accessibility modes: hidden (default),
visible,mutable(also visible), andassignable(also visible and mutable). -
Struct types can overload array index operator (unnamed method
(=StructType) (IndexType) =ItemType). -
Packages are imported using URI strings. Imported packages may be accessed using namespaces (
package::Symbol) or specific symbols can be imported into scope (Symbol). -
Assignment syntax supports multiple targets and values.
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Function or method call expressions can appear in assignment target list.
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Expression
clone x.
Type modifier reference
Type Description
T non-null mutable owned value
*T nullable pointer to mutable owned value
=T non-null temporary reference to mutable value
=*T nullable temporary pointer to mutable value
&T non-null reference to immutable value
*&T nullable pointer to immutable value
#T non-null immutable shared value
*#T nullable pointer to immutable shared value
&#T non-null reference to immutable shared value
*&#T nullable pointer to immutable shared value