The constant( function converts an expression into a constant value (that can be plugged into a new formula).
This function has one parameter:
formula – is the formula you want to convert into a constant.
The constant( function converts an expression into a constant value. It determines the type of value generated by the expression, then adds quoting as necessary to make a valid constant that can be used to assemble a formula.
Suppose a program initialized two variables a and b like this:
let a = 1 let b = "hello"
Then various incancations of the constant( function will produce these results.
constant(a) ☞ 1 constant(b) ☞ "hello" constant(b+a) ☞ "hello1" constant(c) ☞ error("Field or Variable [c] does not exist.")
Essentially the constant( function provides a way to “freeze” the current value of a variable, so that it could be used later. In fact, the constant( function is used internally by the convertvariablestoconstants statement for just this purpose.
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