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isconst

isconst([m::Module], s::Symbol) -> Bool

Determine whether a global is declared const in a given Module. The default Module argument is current_module().

Examples

julia> module MyModule
           const x = 5
           y = 10
       end

julia> isconst(MyModule, :x)
true

julia> isconst(MyModule, :y)
false

julia> isconst(:π)
true

In the above examples,

• isconst(MyModule, :x) checks if the symbol :x in the module MyModule is declared as a constant. It returns true since x is declared as const in MyModule.
• isconst(MyModule, :y) checks if the symbol :y in the module MyModule is declared as a constant. It returns false since y is not declared as const in MyModule.
• isconst(:π) checks if the global symbol :π is declared as a constant. It returns true since π is a constant in the global scope.

Note: If no module is specified, current_module() is used as the default module.

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