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inline type narrowing #1873

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HoneyryderChuck opened this issue Jun 7, 2024 · 1 comment

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HoneyryderChuck commented Jun 7, 2024

Not sure, but I think some variations with case-statement of this work, but this does not:

# considering a @io typed as TCPSocket | SSLSocket

if @io.is_a?(SSLSocket) && @io.verify_hostname(host)
# the last statement fails because `TCPSocket | SSLSocket` does not define verify_hostname, only the latter

Contributor

ParadoxV5 commented Jun 7, 2024

Type checker limitation?

We can aid this for all checkers with

Support type narrowing #1822

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