for-loop

问题 in my Django 1.1.1 application I've got a function in the view that returns to his template a range of numbers and a list of lists of items, for example: ... data=[[item1 , item2, item3], [item4, item5, item6], [item7, item8, item9]] return render_to_response('page.html', {'data':data, 'cycle':range(0,len(data)-1]) Inside the template I've got an external for loop, that contains also another for cycle to display in output the contains of the inner lists of data in this way ... {% for page in

问题 in my Django 1.1.1 application I've got a function in the view that returns to his template a range of numbers and a list of lists of items, for example: ... data=[[item1 , item2, item3], [item4, item5, item6], [item7, item8, item9]] return render_to_response('page.html', {'data':data, 'cycle':range(0,len(data)-1]) Inside the template I've got an external for loop, that contains also another for cycle to display in output the contains of the inner lists of data in this way ... {% for page in

问题 I need a VBA script that will perform a double FOR loop. The first FOR loop, is a loop that needs to perform a few commands over multiple sheets (The first sheet is the main sheet and needs to be skipped!!) The second for loop needs to compare values on multiple rows. I have pasted my code so far... Public Sub LoopOverSheets() device = Cells(6, 1) 'This value is whatever the user chooses from a drop-down menu Dim mySheet As Worksheet 'Creating variable for worksheet orow = 8 'setting the

问题 This question already has answers here : Declaring variables inside loops, good practice or bad practice? (7 answers) Closed 14 days ago . Im trying to figure out what is the best practice when initializing certain variables... My code looks like this at the moment: int nHexCount = 0; int prevState = sc.state; bool bOnlySpaces = true; bool bIsValidLabel = true; bool bIsHotstring = false; bool bIsValidName = true; bool bIsValidExpStart = false; bool fInExpression = false; bool fInStringBlock =

问题 This question already has answers here : Declaring variables inside loops, good practice or bad practice? (7 answers) Closed 14 days ago . Im trying to figure out what is the best practice when initializing certain variables... My code looks like this at the moment: int nHexCount = 0; int prevState = sc.state; bool bOnlySpaces = true; bool bIsValidLabel = true; bool bIsHotstring = false; bool bIsValidName = true; bool bIsValidExpStart = false; bool fInExpression = false; bool fInStringBlock =

问题 I'm playing with some loops in python. I am quite familiar with using the "for" loop: for x in y: do something You can also create a simple list using a loop: i = [] for x in y: i.append(x) and then I recently discovered a nice efficient type of loop, here on Stack, to build a list (is there a name for this type of loop? I'd really like to know so I can search on it a little better): [x.name for x in y] Ok, that being said, I wanted to go further with the last type of loop and I tried to

问题 I have one 2 dimensional array, so an array of arrays. The arrays of the arrays DONT have the same lengths. Here an example: double[][] multi = new double[][] { { 10, 20, 30, 40, 50 }, { 1.1, 2.2, 3.3, 4.4 }, { 1.2, 3.2 }, { 1, 2, 3, 4, 5, 6, 7, 8, 9 } }; How can I loop through the columns? (Like: 10 1.1 1.2 1 ) 回答1: You can do it like this to iterate the whole array column-wise : // Get the maximum number of columns among all rows. int maximumColumns = 0; for (double[] row : multi) { if (row

问题 I have one 2 dimensional array, so an array of arrays. The arrays of the arrays DONT have the same lengths. Here an example: double[][] multi = new double[][] { { 10, 20, 30, 40, 50 }, { 1.1, 2.2, 3.3, 4.4 }, { 1.2, 3.2 }, { 1, 2, 3, 4, 5, 6, 7, 8, 9 } }; How can I loop through the columns? (Like: 10 1.1 1.2 1 ) 回答1: You can do it like this to iterate the whole array column-wise : // Get the maximum number of columns among all rows. int maximumColumns = 0; for (double[] row : multi) { if (row

问题 I would like to use for (key in json) but only use every other key. It would be simple using arrays, but the json I recieve consists only of objects. I have already asked a smililair question and th nicee people pointed out a typo and why it didn't work. The problem (I am still having) is that the content is duplicated (ie: I would like the 1st object in id="1" and the 2cnd object in id="2", then the 3rd object again in id="1" and the 4th object again in id="2" etc.) The problem is that I get

问题 I would like to use for (key in json) but only use every other key. It would be simple using arrays, but the json I recieve consists only of objects. I have already asked a smililair question and th nicee people pointed out a typo and why it didn't work. The problem (I am still having) is that the content is duplicated (ie: I would like the 1st object in id="1" and the 2cnd object in id="2", then the 3rd object again in id="1" and the 4th object again in id="2" etc.) The problem is that I get