There’s no reason to do a computation that has the same result multiple times, especially if it involves memory allocations. You’re correct in that your first snippet has worse time and memory performance. Every call to split will iterate over the string (probably the fastest part of all that), allocate two new arrays and copy … Read more
Try This Don’t need to use JSON simply try this code to get response from server NSString *string= [[NSString alloc]initWithFormat:@”url”]; NSLog(@”%@”,string); NSURL *url = [NSURL URLWithString:string]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; [request setHTTPMethod:@”POST”]; NSURLResponse *response; NSError *err; NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err]; NSLog(@”responseData: %@”, responseData); NSString *str = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; NSLog(@”responseData: … Read more
Because it is a recursive function. Let’s say you call it with n=3… For the first case you would get: printSeriesInReverse(3) 3 > 0 // YES prints 3 printSeriesInReverse(2) 2 > 0 // YES prints 2 printSeriesInReverse(1) 1 > 0 // YES prints 1 printSeriesInReverse(0) 0 > 0 // NO // End of recursion Final … Read more
Simply comment out the line specifying validators for the email attribute, or remove it altogether: # app/models/user.rb # validates :email, :presence => false, :email => false You’ll also need to make a slight modification to your users table. By default, Devise does not allow the email field to be null. Create and run change a … Read more
you can use this : <?php $update = “”; foreach($_POST as $key => $value) { if(!empty($value)) { $update .= $key. “='”.$value.”‘,”; } } $update = substr($update,0,-1); $query = “UPDATE table_name SET “.$update.” WHERE id=$id”; ?> solved PHP: Create SQL query for available $_POST variable [closed]
I think the reason is pretty clear. ints.forEach((i) -> { System.out.print(ints.get(i-1) + ” “); }); Translates approximately to: for (Integer i : ints) { System.out.println(ints.get(i – 1) + ” “); } Which will cause IndexOutOfBoundsExceptions because i refers to the elements of each list, and each of those elements – 1 will give an index … Read more
<> Is used in C# generics to declare generic types. Ex. for a list. List<int> would create a list of ints. To explain it further you could have a type like this: public class MyGenericType<T> { public T MyGenericProperty { get; set; } } In which case you could do something like this: var myGenericIntType … Read more
Before I answer you question, note that a void method can’t return an ArrayList. And to the question: They differ in the lock they acquire. In this case, the first one is an implicit lock on “this”. It’s a way to write public void getPlayers() { synchronized (this) { return list; } } Except that … Read more
BODMAS rule is used to evaluate the expression . d*b = 18 “+” and “-” have same precedence . But “-” comes first in the left. SO 100 – 18 = 82 And then 82 + 8 = 90. solved Precedence of basic mathematical operators
Your while loop does not do the same thing as your for loop; the for loop starts at 1 and always increments i. Move the i += 1 before the even test: i = 0 while(i < 10): i += 1 if i % 2 == 0: continue print i because 0 % 2 == … Read more
The problem appears to be here: sieve <- c(sieve[(sieve %% i) ! = 0], i). I’m assuming that you want “is not equal to”, so should be sieve <- c(sieve[(sieve %% i) != 0], i). Here’s the formatted code that works for me: Eratosthenes <- function(n) { if (n >= 2) { sieve <- seq(2,n) … Read more
You don’t need FFMPEG, you can use the standard codecs available in android. public void playFile(String fileToPlay) { // see where we find a suitable autiotrack MediaExtractor extractor = new MediaExtractor(); try { extractor.setDataSource(fileToPlay); } catch (IOException e) { out.release(); return; } extractor.selectTrack(0); String fileType=typeForFile(fileToPlay); if (fileType==null) { out.release(); extractor.release(); return; } MediaCodec codec = … Read more
<html> <head> <title>IVORY:SAMPLE ONE</title> <link rel=”stylesheet” type=”text/css” href=”https://stackoverflow.com/questions/24948593/css/style.css”> <link rel=”stylesheet” type=”text/css” href=”css/bootstrap.css”> <link rel=”stylesheet” type=”text/css” href=”css/bootstrap-responsive.css”> <link href=”css/js-image-slider.css” rel=”stylesheet” type=”text/css” /> <script src=”js/js-image-slider.js” type=”text/javascript”></script> <script src=”https://stackoverflow.com/questions/24948593/js/jquery.js” type=”text/javascript”></script> <link href=”css/generic.css” rel=”stylesheet” type=”text/css” /> <script type=”text/javascript”> $(document).ready(function() { $(‘#control’).load(‘Home.html #controlHome’) ; $(‘#home’).click(function () { $(‘#control’).load(‘Home.html #controlHome’) ; }); $(‘#men’).click(function () { $(‘#control’).load(‘Men.html ‘) ; }); $(‘#women’).click(function () … Read more
If you output the Date object directly, its toString function is called implicitly, giving you a string in the format dow mon dd hh:mm:ss zzz yyyy, which may or may not be what you want. Using DateFormat implementation lets you choose the date format that seems appropriate for your task. The method used in that … Read more
The default return of the method will be None. If you perform the following: res = output() and print out res, it will be None. By default, None is always returned when not specifying a return. >>> def output(): … print “Hello, world!” … >>> res = output() Hello, world! >>> res >>> type(res) <type … Read more