@extends('template')

@section('title')
    Lab 4: Predicates and Conditionals
@stop

@section('content')

# Lab 4 Predicates and Conditionals 

{{--
## [Solutions](/content/labs/lab04/solutions/)
--}}

{{--
## [Worksheet solns](https://docs.google.com/document/d/1XH3N7TOIITWi2Xb-b4_fNrv4WDseXZCZh8b4D-YPJIk/edit?usp=sharing)
--}}


## Goals
+ Practice writing predicates
+ Practice with conditionals
+ “Divide, Solve, and Combine” (DSC): functions with conditionals


@include('/labs/_setup', ['folder' => 'lab04'])

{{--
- [Here is the worksheet as a google doc](https://docs.google.com/document/d/15XbSXyb5H-95k4-j9zcRqUzt5o7BghfYvN01tfiudbI/edit?usp=sharing)
- Open the document, then File -> Make a Copy. 
- Then you can edit your copy with your answers.
--}}

@include('/labs/lab04/_toc')

## Big Questions {.bigqs}

- *What is a predicate, and how can you build a complex predicate out of
  multiple simpler predicates?*
  <details class="answer">
    <summary>Show Answer</summary>
    A predicate is a function that always returns a boolean value. To build a
    complex predicate from simple ones, the complex predicate function should
    call the simple functions and combine their result values using boolean
    operators into a single boolean that it can return.
  </details>
- *What is the difference between writing a series of `if` statements and a
  single `if` statement with multiple `elif` parts?*
  <details class="answer">
    <summary>Show Answer</summary>
    A series of if statements operate independently, and it's possible for
    more than one to trigger. A chain of if/elif statements guarantees that
    only the first statement whose condition is true will trigger, and others
    will be skipped even if their conditions are also true.
  </details>

@stop