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varIfNot

Call a function if the type of the given function is different to the "bad".

This function should be used by advanced developers only. This function is not yet available.

Prototype :

fun [S S fun [u0] u1 u0] u1

• S : the name of the variable
• S : the "bad" type (of course, it should be known in the current channel)
• fun [u0] u1 : the called function if the variable has not the bad type
• u0 : the parameter at your convenience for the function

Return : u1 the return value of the function (if called), nil else (not called or error).

See also