Skip to content

Latest commit

 

History

History
116 lines (81 loc) · 3.72 KB

checkParam_emptyExtra.md

File metadata and controls

116 lines (81 loc) · 3.72 KB
Raw

checkParam_emptyExtra()

All examples below can be executed in the console of repl.html

A Single Parameter Empty Check With Possible Extra Empties

function PRE_check_oneParam(a_parameter){
  return type_czech.checkParam_emptyExtra(a_parameter, 'EMPTY-ERROR')
}

type_czech = TypeCzech('THROW-EXCEPTIONS')
oneParam = type_czech.linkUp(oneParam, PRE_check_oneParam) 

function oneParam(){ }

oneParam('not-empty')                      // pass
oneParam('not-empty', '')                  // pass
oneParam('not-empty', [])                  // pass
oneParam('not-empty', {})                  // pass
oneParam([1, 'Abba'])                      // pass
oneParam([1984, 'Blondie', false, [], {}]) // pass

oneParam('')          // PRE fail - first parameter is empty
oneParam([])          // PRE fail - first parameter is empty
oneParam('', 'extra') // PRE fail - first parameter is empty

B Two Parameter Empty Check With Possible Extra Empties

function PRE_check_twoParams(param_1, param_2){
  return type_czech.checkParam_emptyExtra([param_1, param_2], ['EMPTY-ERROR', 'EMPTY-ERROR'])
}

type_czech = TypeCzech('THROW-EXCEPTIONS')
twoParams = type_czech.linkUp(twoParams, PRE_check_twoParams) 

function twoParams(){ }

twoParams('not-empty', 'ok')          // pass
twoParams('not-empty', 'ok', '')      // pass
twoParams('not-empty', 'ok', [])      // pass
twoParams('not-empty', 'ok', {})      // pass

twoParams('')          // PRE fail - first parameter is empty
twoParams('full', []) // PRE fail - second parameter is empty

C Extra Object Parameter Empty Check

function PRE_check_objectExtra(an_object){
  return type_czech.checkParam_emptyExtra(an_object, {song: 'EMPTY-ERROR'})
}

type_czech = TypeCzech('THROW-EXCEPTIONS')
objectExtra = type_czech.linkUp(objectExtra, PRE_check_objectExtra) 

function objectExtra(single_object_with_extra){ }

objectExtra({song:'Deacon Blues'})     // pass
objectExtra({song:'Peg', album:'Aja'}) // pass

objectExtra({album:'Gaucho'})  // PRE fail - no song

D One Value Array Parameter Empty Check

function PRE_check_arrayOneElem(a_1_array){
  return type_czech.checkParam_emptyExtra(a_1_array, ['EMPTY-ERROR'])
}

type_czech = TypeCzech('THROW-EXCEPTIONS')
arrayOneElem = type_czech.linkUp(arrayOneElem, PRE_check_arrayOneElem) 

function arrayOneElem(a_1_array){ }

arrayOneElem(['not-empty'])                         // pass
arrayOneElem(['not-empty'], 'extra')                // pass with extra
arrayOneElem(['an', 'exta-element'], 'extra-param') // pass - 2 extras

arrayOneElem('not-empty', 'extra') // fail - not array
arrayOneElem([], 'extra')          // fail - empty array

E Two Element Array Parameter Empty Check With Possible Extra Empties

This example requires the first two elements of one parameter to be non-empty, while empty elements may follow.

function PRE_check_array2ExtraOk(array_2_elems){
  return type_czech.checkParam_emptyExtra(array_2_elems, ['EMPTY-ERROR', 'EMPTY-ERROR'])
}

type_czech = TypeCzech('THROW-EXCEPTIONS')
array2ExtraOk = type_czech.linkUp(array2ExtraOk, PRE_check_array2ExtraOk) 

function array2ExtraOk(array_2_elems){ }

array2ExtraOk([1, 2, '']) // pass
array2ExtraOk([1, 2], '') // pass
array2ExtraOk([1, 2, ''], '') // pass

array2ExtraOk([1, '']) // fail - second parameter is an empty string ''

© 2024 Steen Hansen