for-loop

问题 My code below does exactly what I am looking for the problem is it just does this in a uibtton. I would like to do the same thing with 2 uitextfields and 2 uilabels. So textfield to uilabel to textfield to uilabel. I assume you would just have to change "button in" but I dont know what to change it with. I want the objects spaced 40 between each other just like below. func setConstraints() { var yPosition: CGFloat = 0 [undoButton, clearButton, color].forEach { button in NSLayoutConstraint

问题 One parameter in my model controls the dimension of arrays; it can vary from 1 to any positive integer: for my purposes this can be up to 20. The flow of the program goes through a number of loops that depend on this dimension. For example, if the value of the parameter is one I would have: for i1 in range(0,100,1): do stuff If the value of the parameter is two, then I would have something like: for i1 in range (0,100,1): for i2 in range (0,100,1): do stuff Or, if the value of the parameter

问题 I have created a long code, consist of multiple lists inside for-loops. There are nothing wrong with calculation.It does obtain results as it is expected to. The code and construction of lists work fine. The problem is when it runs, I have defined a break when a certain condition is matched. But it does not break at first run, continues and run through all values within range function of first loop. I want to achieve to return a true value, when the condition is matched, and stops and will

问题 I have created a long code, consist of multiple lists inside for-loops. There are nothing wrong with calculation.It does obtain results as it is expected to. The code and construction of lists work fine. The problem is when it runs, I have defined a break when a certain condition is matched. But it does not break at first run, continues and run through all values within range function of first loop. I want to achieve to return a true value, when the condition is matched, and stops and will

问题 Anyway, I have this extremely simple java program to find out if 2 objects in an array are the same. How ever when I run it when a set of unique objects it always returns 1 error, If I add more objects that are the same it counts as normal. This is the code; int[] array= new int[] {1,245,324,523}; int size = array.length; int error=0; System.out.println(error); int i = 0; for(i=0; i<size; i++){ if(array[0] == array[i]){ error= error +1; } System.out.println(error); } 回答1: The 1 error is

问题 I'm having a problem that I can't solve. I have a loop in javascript where the condition variable to stop depends on a global variable. The loop starts looping and when I change the value of that global variable it never stops. stop = false; var i = 0; while ((stop == false) && (i<100000)){ console.log("hi-"+i); i++; } While loop is running, if I do stop = true, it never stops. I do not know why is that. Any idea? Thanks! 回答1: JavaScript is inherently single threaded. Once a block of code has

问题 I'm using scikit-learn for GMM training and am trying to vary the number of mixture components by looping over a list of integers. But when I print my resulting models I only get the ones with 3 mixture components, or whatever I put as the last item in my list. This is my code: from sklearn.mixture import GMM class_names = ['name1','name2','name3'] covs = ['spherical', 'diagonal', 'tied', 'full'] num_comp = [1,2,3] models = {} for c in class_names: models[c] = dict((covar_type,GMM(n

问题 I used to fiddle with R and now it all seems to have escaped me . . . I have a table with a few hundred columns and about 100k rows. One of those columns contains strings that sometimes have commas in them (e.g. chicken,goat,cow or just chicken). I need a script with a (I believe) for loop that can create a new column (I know the new column code should not be in the for loop), count the number of commas (or the number of entries in the column in question less one) and add one so I can find

问题 I have a data frame in R and I would like to create new columns within a for loop. I have tried many things for the last 2 days but without success. At the end, I did find a solution that seems to work, but it doesn't seem very straight forward. I was wondering if anybody has a more elegant way to do this. Sorry if this has already been addressed but I couldn't find similar question on SO Here is my example. x <- runif(20) a <- as.data.frame(x) for (i in 1:100){ d <- x + i a <- cbind(a, d) }

问题 I have a data frame in R and I would like to create new columns within a for loop. I have tried many things for the last 2 days but without success. At the end, I did find a solution that seems to work, but it doesn't seem very straight forward. I was wondering if anybody has a more elegant way to do this. Sorry if this has already been addressed but I couldn't find similar question on SO Here is my example. x <- runif(20) a <- as.data.frame(x) for (i in 1:100){ d <- x + i a <- cbind(a, d) }