xcode

问题 #include <stdio.h> #define SPACE ' ' void branching_if_judgement(int a, int b){ if (a > b){ printf("a(%d) is larger than b(%d)\n", a, b); }else {[![enter image description here][1]][1] printf("a(%d) is smaller or equal to b(%d)\n", a, b); } } char branching_if_judgement_char(int a, int b){ char res; if (a > b){ printf("a(%d) is larger than b(%d)\n", a, b); res = 'Y'; }else { printf("a(%d) is smaller or equal to b(%d)\n", a, b); res = 'N'; } return res; } int main() { branching_if_judgement

问题 This problem first appeared in my app project, but it's baffled me enough that I tried to simplify things by switching to a Swift Package where I get the same issue. In my project, I have a data model file called "Model.xcdatamodeld" (though the same problem appears no matter what the name). When I call the following init method in my running app, everything runs fine: init(title: String, then completion: @escaping ()->()) { self.container = NSPersistentContainer(name: title) container

问题 I am getting a strange error when trying to compile a simple fortran-90 file using gfortran. I am working on a macOS mojave system. I have gfortran 8.2.0 installed and I checked to be sure of this by doing the following: Input: gfortran --version Output: GNU Fortran (GCC) 8.2.0 Copyright (C) 2018 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Which indicates

问题 A few days ago I successfully delivered Version 1.0.0 Build 1 of my new app to TestFlight. I then made some updates to my code and updated everything to my Github repo's master branch. When I attempted to deliver a new build of my app. I received this email... "Dear Developer, We identified one or more issues with a recent delivery for your app, "AppName" 1.0.0 (2). Your delivery was successful, but you may wish to correct the following issues in your next delivery: ITMS-90078: Missing Push

问题 I want to include linear regression to my iPhone app. After some search, I figured out the LAPACK and BLAS in Accelerate Framework is the right libraries to use. But I have a hard time adding accelerate framework to my XCode. I am using XCode 4.3.2 and MAC OS X 10.7.4 When I add the following line to my XCode: #include it gives me "file not found". If I remove this line, I can not use any functions from LAPACK or BLAS. I have copied and paste the framework from: /system/library/frameworks

问题 Receiving the error Cannot initialize a variable of type 'char *' with an rvalue of type 'const char *' On this line of the code char* pos = strrchr (szPathName, '/'); The full code method for it is here; int main(int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSString * path = [[NSBundle mainBundle] pathForResource: @"fd" ofType: @"dat"]; NSData* image = [NSData dataWithContentsOfFile:path]; const char* szPathName = [path UTF8String]; char* pos =

问题 I am unable to move my avatar in my gameScene at my defined speed(set at 40). It looks as if the avatar and the enemy is free floating in space. Here is my code- import SpriteKit public class GameScene: SKScene, SKPhysicsContactDelegate { let playerSpeed: CGFloat = 40.0 let coronaSpeed: CGFloat = 10.0 var mask: SKSpriteNode? var player: SKSpriteNode? var mcorona: [SKSpriteNode] = [] var lastTouch: CGPoint? = nil override public func didMove(to view: SKView) { physicsWorld.contactDelegate =

问题 I tried "breakpoint [line number]", "breakpoint filename.s:line_number" but they don't work. Currently I have to step through all lines, and it's a hassle 回答1: As an alternative you can: 1) show memory with assembly instructions with di with explicit arguments if you need reach out further di -c 1000 ; if you need to disassemble a specific address di -s <address> 2) set a memory break point with br s -a <memory address you found in previous step> Another alternative is slightly more

问题 @IBAction func saveDetails(sender: AnyObject) { Person.firstName = firstNameTF.text Person.lastName = lastNameTF.text } Above is the function I am trying to implement and below is the class I am trying to create an instance of and store the data from my text fields in... I am getting the error "Instance member "firstName" cannot be used on type Person". I was almost positive that my class was setup and initialised properly so I can't see what the problem could be? class Person { var firstName

问题 As the title describes, what is the actual different? If I have this: func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) { for transaction in transactions { if transaction.transactionState == .purchased { } else if transaction.transactionState == .failed { } else if transaction.transactionState == .restored { // <- This one } } Do I still need to use this (if yes, what code to use here, and what code in transactionState == .restored ?: func