return in a function means you are leaving the function immediately and returning to the place where you call it. So you should use return when you are 100% certain that you wanna exit the function immediately. In your example, I think you don’t want to exit the function until you get the final value … Read more
You’re currently making a command-line application which reads stuff from standard input and prints stuff to standard output. How buttons presses are handled depends entirely on the terminal in which your are running your program, and most terminals won’t send anything to your application’s stdin when escape is pressed. If you want to catch key … Read more
If you need a map and keys in order, those are 2 different things, you need 2 different (data) types to provide that functionality. With a keys slice The easiest way to achieve this is to maintain key order in a different slice. Whenever you put a new pair into the map, first check if … Read more
Let’s identify the patterns first .. Even-Size Square Matrix, Example: 4×4 07 > 08 > 09 > 10 ^ v 06 (01)> 02 11 ^ v v 05 < 04 < 03 12 v [16]< 15 < 14 < 13 Starting Point: [2, 2] ~ [SIZE/2, SIZE/2] Ending Point: [4, 1] ~ [SIZE, 1] Chains: … Read more
you could use the modulus operator for(int i = 0; i < 500; i++) { if(i % 5 == 0) { //do your stuff here } }
1. Implicit cursor It’s almost always better to use the implicit cursor of a FOR loop than to resort to a somewhat slower and unwieldy explicit cursor. I have written thousands of PL/pgSQL functions and only a hand full of times explicit cursors made any sense. CREATE OR REPLACE FUNCTION avoidable_states() RETURNS SETOF varchar LANGUAGE … Read more
Assuming that you use Java 8, you could do that with the Stream API thanks to the method flatMap(Function<? super T,? extends Stream<? extends R>> mapper) as next: // 1. Convert the Set as a Stream of List<Map<String, List<Object>>> // 2. Extract the elements of the lists to get a Stream of Map<String, List<Object>> // … Read more
You can use dynamic SQL and get all the column names for a table. Then build up the script: Declare @sql varchar(max) = ” declare @tablename as varchar(255) = ‘test’ select @sql = @sql + ‘select [‘ + c.name + ‘],count(*) as ”’ + c.name + ”’ from [‘ + t.name + ‘] group by … Read more
I’m not sure what you want to achieve, but you can use X-Macros and have the preprocessor doing the iteration over all the fields of a structure: //— first describe the structure, the fields, their types and how to print them #define X_FIELDS \ X(int, field1, “%d”) \ X(int, field2, “%d”) \ X(char, field3, “%c”) … Read more
You can use the AVAudioPlayer: NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:@”mySound” ofType:@”mp3″]; NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath]; AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:soundFileURL error:nil]; player.numberOfLoops = -1; //infinite [player play]; and you can jump through by setting the currentTime: player.currentTime = 10; //jump to 10th second