Module function/either

either

• either<T>(pred1: Pred<T>, pred2: Pred<T>): Pred<T>
• either<T>(pred1: Pred<T>): (pred2: Pred<T>) => Pred<T>

• A function wrapping calls to the two functions in an || operation, returning the result of the first function if it is truth-y and the result of the second function otherwise. Note that this is short-circuited, meaning that the second function will not be invoked if the first returns a truth-y value.

  example

   var gt10 = x => x > 10;
   var even = x => x % 2 === 0;
   var f = either(gt10, even);
   f(101); //=> true
   f(8); //=> true
   f(3); //=> false
  

  Type parameters

  • T

  Parameters

  • pred1: Pred<T>

  • pred2: Pred<T>

  Returns Pred<T>

  a function that applies its arguments to f and g and ||s their outputs together.

• A function wrapping calls to the two functions in an || operation, returning the result of the first function if it is truth-y and the result of the second function otherwise. Note that this is short-circuited, meaning that the second function will not be invoked if the first returns a truth-y value.

  example

   var gt10 = x => x > 10;
   var even = x => x % 2 === 0;
   var f = either(gt10, even);
   f(101); //=> true
   f(8); //=> true
   f(3); //=> false
  

  Type parameters

  • T

  Parameters

  • pred1: Pred<T>

  Returns (pred2: Pred<T>) => Pred<T>

  a function that applies its arguments to f and g and ||s their outputs together.

  • • (pred2: Pred<T>): Pred<T>

    • Parameters

      • pred2: Pred<T>

      Returns Pred<T>