for-loop - w3toppers.com

Skipping every other element after the first [duplicate]

def altElement(a): return a[::2]

How to loop through key/value object in Javascript? [duplicate]

Beware of properties inherited from the object’s prototype (which could happen if you’re including any libraries on your page, such as older versions of Prototype). You can check for this by using the object’s hasOwnProperty() method. This is generally a good idea when using for…in loops: var user = {}; function setUsers(data) { for (var … Read more

show multiple plots from ggplot on one page in r

Iterate with for loop or while loop?

I prefer the for loop because it also sets the scope of the iterator to just the for loop.

Excel VBA For Each Worksheet Loop

Try to slightly modify your code: Sub forEachWs() Dim ws As Worksheet For Each ws In ActiveWorkbook.Worksheets Call resizingColumns(ws) Next End Sub Sub resizingColumns(ws As Worksheet) With ws .Range(“A:A”).ColumnWidth = 20.14 .Range(“B:B”).ColumnWidth = 9.71 .Range(“C:C”).ColumnWidth = 35.86 .Range(“D:D”).ColumnWidth = 30.57 .Range(“E:E”).ColumnWidth = 23.57 .Range(“F:F”).ColumnWidth = 21.43 .Range(“G:G”).ColumnWidth = 18.43 .Range(“H:H”).ColumnWidth = 23.86 .Range(“i:I”).ColumnWidth = 27.43 … Read more

Need iterator when using range-based for loops

Use the old for loop as: for (auto it = values.begin(); it != values.end(); ++it ) { auto & value = *it; //… } With this, you’ve value as well as iterator it. Use whatever you want to use. EDIT: Although I wouldn’t recommended this, but if you want to use range-based for loop (yeah, … Read more

Why doesn’t modifying the iteration variable affect subsequent iterations?

The for loop iterates over all the numbers in range(10), that is, [0,1,2,3,4,5,6,7,8,9]. That you change the current value of i has no effect on the next value in the range. You can get the desired behavior with a while loop. i = 0 while i < 10: # do stuff and manipulate `i` as … Read more

Difference between ( for… in ) and ( for… of ) statements?

for in loops over enumerable property names of an object. for of (new in ES6) does use an object-specific iterator and loops over the values generated by that. In your example, the array iterator does yield all the values in the array (ignoring non-index properties).