Hello, how to calculate a constant the first time a function is called? not when compiling not every call foo() = (sleep(1); 1) # foo calculate a constant bar(x) = foo() + x # ???? # first call: @time bar(2) # -> 1.001082 seconds (5 allocations: 144 bytes) # second call: @time bar(2) # -> 0.…

If your function has some input, you might better avoid at all this global state, and wrap the constant precomputed in the input, such that the function is completely self-contained. Something like: julia> struct MyInput x::Vector{Float64} constant::Float64 end julia> …

How to calculate a constant the first time a function is called?

General Usage

lmiq March 7, 2022, 1:55pm 3

see this thread: In Julia, how to create a function that saves its own internal state?

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How to calculate a constant the first time a function is called?

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