[Solved] how to calculate integral with R

In mathematics, an integral is the area under the curve. In your example, you want the area under the curve as defined by position and rate. position <- c(2,34,58) rate <- c(14, 20, 5) plot(position, rate, type=”l”, ylim=c(0, 25)) You can calculate the area under the curve by hand, using the trapezoidal rule: 32*17 + … Read more

[Solved] Why is this function not thread safe in golang?

I haven’t analyzed all of it, but definitely the modification of mapStore from multiple goroutines is unsafe: mapStore[*res.someData] = append(mapStore[*res.someData], res) But as a starting point, run this under the race detector. It’ll find many problems for you. This is also clearly unsafe: resSlice := append(resSlice, res) But it also doesn’t quite do what you … Read more

[Solved] some characters that need to use ‘\’ before them to delete [closed]

Which characters need ‘\’ before them to delete from a text ? Characters you must and must not escape depends on the regular expression indication you’re working with. For the most part the following are characters that need escaped outside of character classes [] are: .^$*+?()[{\| And the characters ^-]\ need escaped inside character classes. … Read more

[Solved] Find Min and Max with javascript [closed]

Math.min and Math.max return the minimum and maximum values. Since you want your function to print it out to the console, use console.log to print out these values, along with a templated string to have it in the format you want. const minAndMax = (arr) => console.log(`The minimum value in the array is: ${Math.min(…arr)}, the … Read more

[Solved] Captaincasa grid paging [closed]

As I understand you are looking for a paging/scrolling using buttons (in addition to the normal scrollbar scrolling) to scroll through grid lines. The FIXGRID has some server-side API which allows access/update to the scrolling: FIXGRIDBinding.getSbvalue() ==> current scroll position FIXGRIDBinding.getSbvisibleamount() ==> number of lines currently displayed FIXGRIDBinding.getSbmax() ==> max scroll position FIXGRIDBinding.setSbvalue() ==> set/update … Read more

[Solved] make application with database MySQL is faster [closed]

For db Add indexes for frequently searched fields Think about table partitioning, rarely searched data should be stored in archive tables For backend Optimize queries Minimize cursor fetching For client Use pagination to avoid large data loading Use async loading (SwingWorker for swing, Service for javafx) to avoid UI hanging Don’t mix archive and working … Read more

[Solved] how to create login screen for iPhone Xcode [closed]

if([_txt_username.text isEqual:@”rotanet”] && [_txt_username.text isEqual:@”rotanet”]){ UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@”Storyboard” bundle:nil]; ViewController* viewController = [storyboard instantiateViewControllerWithIdentifier:@”ViewController”]; [self presentModalViewController: viewController animated: YES]; } 2 solved how to create login screen for iPhone Xcode [closed]

[Solved] Multiclassification task using keras [closed]

The keyword is “multilabel classification“. In the output layer you have multiple neurons, each neuron representing one of your classes. Now you should use a binary classification for each neuron independently. So if you have 3 classes, the output of your network could be [0.1, 0.8, 0.99] which means the following: The first class is … Read more

[Solved] Angular 4 – Execute function from outside of component

Two ways: Put the function in a shared service and execute from there Get the component object and call the function from there: Lets say your component name is “TestComponent”, then: Add a selector id #test to your selector in test.component.html <test #test></test> Get the TestComponent in your the component where you want to call … Read more

[Solved] Read the top 10 rows from the database

You can use PHPMyAdmin to create tables, or run a script like this: CREATE TABLE Contents ( Content MEMO NOT NULL, DatePosted DATE NOT NULL, Name VARCHAR2(200) NOT NULL); and select the newest 10 like this: SELECT t.Content, t.DatePosted, t.Name FROM Contents t ORDER BY DatePosted DESC LIMIT 10 But while the answer seems small, … Read more