std::if_not

can be used as a function or a procedure

Parameters

None

The "then-part"- and "else-part" functions can return any number of results (including none). But both should return the same number of results.

if_not is usually used with a simple then-part and a complex else-part.

# "if_not" as a procedure $x 5 if_not x > 3: println! "x is not larger than 3" : println! "x is larger than 3"

x is larger than 3

# "if_not" as a function $x 5 println! if_not x > 3 -> "x is not larger than 3" -> "x is larger than 3"

x is larger than 3

std::if	classic if; can be used as a function or a procedure
std::cond	a multiway conditional expression or statement
std::case	a multiway conditional expression or statement
std::and	"short cut" and-operation
std::or	"short cut" or- operation
std::default_value	returns the first argument if it is defined or else the second argument

std_types::false	evaluates the then-part and returns its result(s)
std_types::true	evaluates the else-part and returns its result(s)