[Feature Request] `ListLiteral` should be subscriptable and implement `__iter__`

[xcloudplatform]

Review Mojo's priorities

• [X] I have read the roadmap and priorities and I believe this request falls within the priorities.

What is your request?

its really not good entry level experience if list literal is not subscribtable or iterable

What is your motivation for this change?

error: Expression [10]:45:27: 'ListLiteral[[!kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>]]' is not subscriptable, it does not implement the `__getitem__`/`__setitem__` methods





error: Expression [12]:44:25: 'ListLiteral[[!kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>, !kgen.declref<_"$StringLiteral"::_StringLiteral>]]' does not implement the '__iter__' method

Any other details?

x

[Mogball]

We have to evolve our list representation a bit. [1, 2, 3] should be subscriptable but something like [1, "foo"] will be a bit trickier to handle.

[octopushugger]

I have this issue with DynamicVector[String] as well

regarding __iter__

[ltjkoomen]

Indeed, as of Mojo version 0.7.0:

• __iter__ is still not implemented for DynamicVector[String]
• __iter__ and __getitem__, __setitem__, __refitem__ are not implemented for ListLiteral

Related issues: #88, #89, now closed in favor of #100.