11 lines
487 B
Text
11 lines
487 B
Text
//Built-in functions are regular functions from an implicitly imported "lang" module
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//There is no actual difference between these functions and user-defined functions
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//You can however write a function that would check if a given function is declared in "lang" module:
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func isBuiltin(fn) =>
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fn.Name is not nil && fn.Name in lang && lang[fn.Name] == fn
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//Usage:
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func foo() { } //A user-defined function
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print(isBuiltin(foo)) //Prints: false
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print(isBuiltin(assert)) //Prints: true
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