array

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: NSMutableArray * arrayTest ; -( void ) setContent { //must I call [array removeAllObjects]; ? arrayTest = [[ NSMutableArray alloc ] init ] [ arrayTest addObject :@ "str" ]; ... //add many objects } I call this function at different code snippet. do I need to removeAllObjects of arrayTest before , then alloc memory for arrayTest every time ? I use ARC . I don't want my app memory to increase every time I call this function. 回答1: No, what you have is fine. You don't need to call removeAllObjects under ARC or non-ARC. When the old

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am trying to generate a PDF from an ODT template file which contain the fields i need to populate. I wanted to get the byte array of this ODT template which is present in the root folder of my project. My application is in such a way that the byte array is provided to generate the PDF. Is there any specific method to generate the byte array without losing the properties of the template..? 回答1: Try this may help you : URL url = this . getClass (). getResource ( "/your_file" ); File templateFile = new File ( url . toURI ()); org .

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: So I have no experience with arrays... But I need to use one to populate a UIPickerView. I am obtaining a list of objects via HTTP (NSURLConnection). This works fine. Currently, the response is stored in a NSString as a comma-separated list. I need to convert it to an array. I think this is the type of array I need: NSArray * myArray2 = [NSArray arrayWithObjects:@"foo",@"bar",@"baz",nil]; Maybe I'm overcomplicating things... I'm really not sure. There is already an array for the PickerView, and I have it setup so to add an item to the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm afraid I don't really know what to provide here. I'm a bit lost. Google sends me in entirely irrelevant directions. I've just upgraded to Python 3.5 and am now trying to get my current project working with it. Unfortunately, part of it is done in Cython, and I've had to spend the last three days trying to get Python to talk to MinGW. Now I've done that via this patch , but the compilation still fails. This file compiled flawlessly previously, so presumably it's something about the way Cython is set up. Here's the full text of the command

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am trying to select amounts from an array given a criteria and reject the other amounts that do not fit. The criteria is: if amount[i,:]> x*amount[i-1,:] keep, otherwise keep prior amount. just like a treshold basically. And I am filling all these amount selected within a new array Array1. In the end the curve array takes it all and draws a curve. Now, the curve somehow always give me the same curve no matter what treshold i put in. This leads me to think that something is wrong with my Array1 code. I am filling this array with a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to do some mathematical operation on the values of a column fetched from a csv file. For that I wrote the code given below: rows = csv.reader(open('sample_data_ml.csv', 'r')) newrows = [] selling_price = [] count = 0 Y_pred = np.asarray(Y_pred, dtype='float64') for margin in Y_pred: for row in rows: if count == 0: count = count+1 else: #print(row[7]) sell = float(row[7]) + margin*float(row[7]) selling_price.append(sell) print(selling_price) I am getting this error : ----------------------------------------------------------------

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: The below query would not work if I used an array but work normally if we use a string to construct the snippet. Did I make a mistake somewhere or is this one is a bug related to arango? var array=["1","2"] //Make a snippet depend on array. var snippet=aql.literal(`FILTER u.id IN "${array}"`) //Main query. Result is incorrect even though it runs var query=db._query(aql` For u in Collection {$snippet} RETURN u ` ) Example of the correct query using string var string="1" var snippet=aql.literal(`FILTER u.id == "${array}"`) 回答1: FILTER u.id IN

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to compare an array of doubles to a scalar double for equality, but equality is never recognized under certain circumstances. I suspect that this has to do with the way the double is represented (e.g., 1.0 vs 1.00), but I can't figure it out. For instance, I have generated an array composed of thousands of double values, the last few of which at some instant in time are given by 10.6000 -11.0000 10.2000 22.6000 3.4000 If I test for equality to 10.2 (or 10.2000) by the command array==10.2 (or array=10.2000 ), I return an array of

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I got a problem with a custom validation rule in Cake 2.X I want to check if the entered zipcode is valid and therefore a function in the class zipcode is called from the class post. But the validation returns false all the time. Appmodel in class post (rule-3 is it): 'DELIVERYAREA' => array ( 'rule-1' => array ( 'rule' => array ( 'between' , 5 , 5 ), 'message' => 'Bitte eine fünfstellige Postleitzahl eingeben' ), 'rule-2' => array ( 'rule' => 'Numeric' , 'message' => 'Bitte nur Zahlen eingeben' ), 'rule-3' => array ( 'exists' =>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hi I am trying to create a new array from a previous array. such that in new array the first element is mean of first 20 elements from existing array. Here is my code. I am not sure why its not working. #Averages RPMA=[] for i in range(9580): for j in range (0,191600): a=RPM.iloc[j:j+20] RPMA(i)= a.mean() 回答1: Looks to me like you're using the wrong kind of brackets. This line: RPMA(i)= a.mean() ...should probably be this: RPMA[i]= a.mean() But I'm no Python expert. I guessing that it thinks RPMA(i) is a function because you use parentheses,