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External module "thread-last"

Index

Functions

Functions

Const threadLast

  • threadLast(init: any, ...fns: (function | [function, any])[]): any
  • Takes an init value and a number of functions and/or function tuples, consisting of: [fn, ...args]. Executes each function (or tuple) with the return value of the previous expression inserted as last argument, using init for the first expression.

    const neg = (x) => -x;
    const sub = (a, b) => a - b;
    const div = (a, b) => a / b;
    
    threadLast(
      5,
      neg,       // -5
      [sub, 10], // 20 - (-5) = 25
      [div, 10]  // 10 / 25 = 0.4
    );
    
    // 0.4

    Parameters

    • init: any
    • Rest ...fns: (function | [function, any])[]

    Returns any

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