let arr = [1,9,5,7,8,5,0];

arr.forEach((currvalue,index,arr)=>{
   //console.log(currvalue);
})

//console.log('Array.forEach')
//console.log(arr)

let newarr = arr.map((currvalue,index,arr)=> currvalue * 2)

//console.log(newarr)

const myUsers = [
    { name: 'shark', likes: 'ocean' },
    { name: 'turtle', likes: 'pond' },
    { name: 'otter', likes: 'fish biscuits' }
]

let st = myUsers.map(function(currvalue){
    
    //console.log(this)
    let newMyUsers = {}
    
    newMyUsers.statement = currvalue.name+' likes '+currvalue.likes
    
    return newMyUsers
},'234')

filterArr = arr.filter((currvalue,index,arr) => {
   //return !(index % 2)
   return arr.indexOf(arr[index]) == index
})

//console.log(filterArr)

let reduceArr = arr.reduce( (accumulator,currvalue,index,arr) => {
    
    return accumulator = (accumulator >= currvalue) ? accumulator : currvalue
})

//console.log(reduceArr)

let findArr = arr.find((currvalue,index,arr)=>{
    return !(currvalue % 5)
})

//console.log(findArr)

let findIndexArr = arr.findIndex((currvalue,index,arr)=>{
    return !(currvalue % 5)
})

//console.log(findIndexArr)

const evearr = [].some((currvalue) => {
    return currvalue >= 1
})

console.log(evearr)