So, I defined a function like so (using \parallel): julia> ∥(a,b) = 1/(1/a+1/b) ∥ (generic function with 1 method) julia> ∥(10,10) 5.0 julia> 10∥10 5.0 julia> 10∥10∥10 ERROR: TypeError: non-boolean (Float64) used in boolean context Stacktrace: [1] top-level scope at REPL[40]:1 julia> (10∥10)∥1…

The problem is that the ∥ symbol ( U+2225 ) is parsed as a comparison operator, like == or >=, so a ∥ b ∥ c gets parsed as a “chained comparison” and is essentially a ∥ b && b ∥ c, just as a == b == c is equivalent to a == b && b == c. The reason it is parsed as a comparison operator is that the offi…

Error I don't understand involving infix operator

New to Julia

stevengj September 27, 2019, 2:15am 10

Currently, the manual just refers you julia-parser.scm. Both ⧺ and ∥ are indeed in that file.

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Error I don't understand involving infix operator

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