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A comment on Cap'n Web: a new RPC system for browsers and web servers. Parent comment

Re:Cap'n Web: a new RPC system for browsers and web servers by adzm on Monday September 22, 2025 @05:01PM (#45339397)
The lambda is converted into an Expression, basically a syntax tree, which is then analyzed to see what is accessed.
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Re:Cap'n Web: a new RPC system for browsers and web servers by javier2 on Wednesday September 24, 2025 @05:33AM (#45358057)
Ok, so its a step in the compile that rewrites and analyzes it?
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Re:Cap'n Web: a new RPC system for browsers and web servers by adzm on Wednesday September 24, 2025 @10:12PM (#45368548)
It's actually really neat. Normally a lambda would just be a function but if it gets cast to an Expression then you get the AST at runtime. Entity Framework analyzes these at runtime to generate the SQL and logic/mapping etc. You can get the AST at compile time in some situations with a Roslyn plug-in or etc I believe as well.
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