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For the complete Mojo documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /docs/manual/basics.md).

len

Provides the len() function and its associated traits.

These are Mojo built-ins, so you don't need to import them.

Traits​

  • ​Sized: The Sized trait describes a type that has an integer length (such as a string or array).
  • ​SizedRaising: The SizedRaising trait describes a type that has an integer length, which might raise an error if the length can't be determined.

Functions​

  • ​len: Get the string length.
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