Mojo module

inline_string

Implements a string optimized for storing small strings.

The main type is InlineString which implements small-string optimization to avoid heap allocations for short strings. For strings shorter than SMALL_CAP (24 bytes), the data is stored inline in the struct's memory layout. For longer strings, it falls back to heap allocation.

Key Features:

Small-string optimization avoiding heap allocations for short strings
Efficient concatenation and mutation operations
UTF-8 encoding support
Memory safety through bounds checking

The module also provides _FixedString, an internal type used by InlineString for the small string optimization case. _FixedString provides a fixed-capacity string implementation with inline storage.

Example:

    from collections.string.inline_string import InlineString

    var s = InlineString("Hello")  # Stored inline, no heap allocation
    s += " World"                  # Still inline
    s += " with a much longer string"  # Now uses heap allocation
    from collections.string.inline_string import InlineString

    var s = InlineString("Hello")  # Stored inline, no heap allocation
    s += " World"                  # Still inline
    s += " with a much longer string"  # Now uses heap allocation

Structs

InlineString: A string that performs small-string optimization to avoid heap allocations for short strings.

Structs​

Structs