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Method __get_first_arg_type()
- Method
__get_first_arg_type
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type(mixed) __get_first_arg_type(type(mixed) fun_type)
- Description
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Check if a function of the type fun_type may be called
with an argument, and return the type of that argument.
- Returns
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Returns the expected type of the first argument to the function.
Returns 0 (zero) if a function of the type fun_type
may not be called with any argument, or if it is not callable.
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