runtime

问题 I am trying to create some "CLLocation"s from data that I've read from a file. The first step is to instantiate a "CLLocationCoordinate2D" to be fed into the initializer for CLLocation. I'm trying out my ideas in a Playground and this very simple code generates a runtime error: import CoreLocation let lat = 48.8 let lon = -122.3 let point2D = CLLocationCoordinate2D(latitude: lat, longitude: lon) Error message is error: Execution was interrupted, reason: signal SIGABRT. The process has been

问题 I am using the R programming language. I want to learn how to measure and plot the run time of difference procedures as the size of the data increases. I found a previous stackoverflow post that answers a similar question: Plot the run time of three functions It seems that the "microbenchmark" library in R should be able to accomplish this task. Suppose I simulate the following data: #load libraries library(microbenchmark) library(dplyr) library(ggplot2) library(Rtsne) library(cluster)

问题 I am using the R programming language. I want to learn how to measure and plot the run time of difference procedures as the size of the data increases. I found a previous stackoverflow post that answers a similar question: Plot the run time of three functions It seems that the "microbenchmark" library in R should be able to accomplish this task. Suppose I simulate the following data: #load libraries library(microbenchmark) library(dplyr) library(ggplot2) library(Rtsne) library(cluster)

问题 I am trying to achieve real-time data from twilio server-less function. I am using a boilerplate function edited a little bit.What I want is json data in server and voice response in call consecutively .but the following code is not sending json data to server. const axios = require('axios'); exports.handler = function (context, event, callback) { let twiml = new Twilio.twiml.VoiceResponse(); twiml.say('you are welcome '); const instance = axios.create({ baseURL: 'http://fafc4eac4162.ngrok.io

问题 I have a working code that integrates with Access runtime 2013 (32bit) (reading an Excel file). I removed the 2013 version, and installed the Access runtime 2016 version instead. This is the connection string I'm using (that worked with 2013): Provider=Microsoft.ACE.OLEDB.15.0;Data Source=C:\\Users\\myuser\\Desktop//District.xls;Extended Properties=\"Excel 12.0;HDR=YES;\"; Also, using Microsoft.Office.Interop.Excel version 15.0.0.0, Runtime Version v2.0.50727 When I'm running the code I'm

问题 I know I can compile individual "snippets" in Scala using the Toolbox like this: import scala.reflect.runtime.universe import scala.tools.reflect.ToolBox object Compiler { val tb = universe.runtimeMirror(getClass.getClassLoader).mkToolBox() def main(args: Array[String]): Unit = { tb.eval(tb.parse("""println("hello!")""")) } } Is there any way I can compile more than just "snippets", i.e., classes that refer to each other? Like this: import scala.reflect.runtime.universe import scala.tools

问题 I know I can compile individual "snippets" in Scala using the Toolbox like this: import scala.reflect.runtime.universe import scala.tools.reflect.ToolBox object Compiler { val tb = universe.runtimeMirror(getClass.getClassLoader).mkToolBox() def main(args: Array[String]): Unit = { tb.eval(tb.parse("""println("hello!")""")) } } Is there any way I can compile more than just "snippets", i.e., classes that refer to each other? Like this: import scala.reflect.runtime.universe import scala.tools

问题 I know I can compile individual "snippets" in Scala using the Toolbox like this: import scala.reflect.runtime.universe import scala.tools.reflect.ToolBox object Compiler { val tb = universe.runtimeMirror(getClass.getClassLoader).mkToolBox() def main(args: Array[String]): Unit = { tb.eval(tb.parse("""println("hello!")""")) } } Is there any way I can compile more than just "snippets", i.e., classes that refer to each other? Like this: import scala.reflect.runtime.universe import scala.tools

问题 A program I'm working on converts an array of integers to a string using string builder. I'm trying to determine the time complexity of this approach. 回答1: Check out: https://stackoverflow.com/a/7156703/7294647 Basically, it's not clear what the time complexity is for StringBuilder#append as it depends on its implementation, so you shouldn't have to worry about it. There might be a more efficient way of approaching your int[]-String conversion depending on what you're actually trying to

问题 A program I'm working on converts an array of integers to a string using string builder. I'm trying to determine the time complexity of this approach. 回答1: Check out: https://stackoverflow.com/a/7156703/7294647 Basically, it's not clear what the time complexity is for StringBuilder#append as it depends on its implementation, so you shouldn't have to worry about it. There might be a more efficient way of approaching your int[]-String conversion depending on what you're actually trying to