Output: Ranjan = 6, Ajay = 4,Vijay = 5, Sujit = 5, John = 4 ,Rakesh = 6, Hari = 4. Loop through an array of strings containing students’ names and find the length of each string inside the array. Examples in PowerShell ForEach Loopīelow is the example in PowerShell ForEach Loop: Example #1 Just run once and modify as many as the record you want. This way we are making our life easier, as in real life there would be lakhs of record which need to modify, so we can not do it one by one so we are using the foreach loop to deal with these. Finally, we pass it from the foreach loop which given us a result of 10,20,45,25. To multiply the number five to each of the elements in the array, We need to walk through the array by using the ForEach command.Įxplanation of the above code: In the above examples we can see, we defined one another variable $f and assigned all 4 variables to it, which makes it an array. So what would be an easy solution for it? All we need to do is, we should create an array with all our elements and pass the array by foreach and multiply every element with 5. But it was good till we have only 4 items to multiply with 5, suppose there will be 10000 elements which need to multiply with 5 then it would be a very tedious task to write for each.
Suppose we have $a,$b,$c,$d and we have to multiply each with 5 so what we will do, look below example: Suppose we have 4 elements and we want to multiply each number with five. How does ForEach Loop work in PowerShell? Once Array get empty loop stop execution.Įxplanation of the above output: Above screen shows, if there were two attributes inside array it was printing two times, hello, but if we made $students as an empty array no hello print, that means in case of any attribute is available inside $students array than it is going to execute statement block else it is not executing. But if Data is there it will continue execution and execute statement 1, statement 2, statement 3 till last data of array. $students = "ajay","vijay","ranjan","akash",”vikash”īelow is the Flow diagram for PowerShell ForEach Loop:Įxplanation of the above flow Diagram: The above flow diagram very clearly represents flow, Once execution starts first, it will check for data(checking if the element is there in the array) if it’s empty loop will halt. Output nothing, which means checking of array elements attributes are done internally by foreach loops.
PS /home/ranjan> foreach ($student in $students) In for loop, we needed to write logic to check if the array is empty or not, the foreach loop executes statements block if there is any element inside array. For example, the Foreach loop in the following example displays the values in the $students array. PowerShell creates the variable $ automatically when the Foreach loop runs. If $ is blank or having no item inside it, it will not go for the execution of statements. In the above syntax, we can see, every time one item from the Actualarray will be picked and that item will go for processing inside the foreach loop. Hadoop, Data Science, Statistics & others
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