16 - Arrays with One Type

Arrays with one type

by steen_hansen

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<title>16 Arrays with One Type</title>





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  <div class='an-explantion'>16 - Arrays with One Type</div>
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<pre title='Copy and paste the green code below into the console to run' class='console-runnable'>
func1 = (string_array) => string_array                  // array of strings
PRE_check_func1 = (string_array) => { 
  return type_czech.checkParam_type(string_array, ['strings'])
}
func1 = type_czech.linkUp(func1, PRE_check_func1)
func1(['pass', 'a-string'])                                    // pass
func1(['fail', 12])                                            // fail - 12
</pre>
<pre title='Copy and paste the green code below into the console to run' class='console-runnable'>
func2 = (string_array_2) => string_array_2            // array of 2 strings
PRE_check_func2 = (string_array_2) => { 
  type_signature = ['string', 'string']
  return type_czech.checkParam_type(string_array_2, type_signature)
}
func2 = type_czech.linkUp(func2, PRE_check_func2)
func2([ 'pass', 'two'])                                // pass
func2([ 'fail', 'two', 'three'])                       // fail - 3 elements
</pre>
<pre title='Copy and paste the green code below into the console to run' class='console-runnable'>
func3 = (arr_of_arr) => arr_of_arr                      // arrays of arrays
PRE_check_func3 = (arr_of_arr) => {
  return type_czech.checkParam_type(arr_of_arr, ['arrays'])
}
func3 = type_czech.linkUp(func3, PRE_check_func3)
func3([  [],  ['a'], [2], ['pass', 3]  ])               // pass
func3([  [],  [], [], 'fail'  ])                        // fail - not array
</pre>
<pre title='Copy and paste the green code below into the console to run'...