- Do not disable method Swizzling?
- What is dynamic keyword in Swift?
- What happens when you invoke a method on a nil pointer?
- What is method Swizzling in Objective-C?
- What is Dispatch in Swift?
- How do I find my APN authentication key?
- What is method Swizzling Swift?
- What is method Swizzling in iOS?
- What is the difference between Swift 4 and 5?
- Is Swift static or dynamic?
- What is Fcmtoken?
- What is firebase Swizzling?
Do not disable method Swizzling?
Method swizzling in Firebase Cloud Messaging Developers who prefer not to use swizzling can disable it by adding the flag FirebaseAppDelegateProxyEnabled in the app’s Info.
plist file and setting it to NO (boolean value)..
What is dynamic keyword in Swift?
Dynamic dispatch. It simply means that the Objective-C runtime decides at runtime which implementation of a particular method or function it needs to invoke. … Swift uses the Swift runtime whenever possible. The result is that it can make a number of optimizations.
What happens when you invoke a method on a nil pointer?
In Objective-C, it is valid to send a message to nil — it simply has no effect at runtime. … If the method returns any pointer type, any integer scalar of size less than or equal to sizeof(void*) , a float , a double , a long double , or a long long , then a message sent to nil returns 0 .
What is method Swizzling in Objective-C?
Method swizzling is the process of changing the implementation of an existing selector. It’s a technique made possible by the fact that method invocations in Objective-C can be changed at runtime, by changing how selectors are mapped to underlying functions in a class’s dispatch table.
What is Dispatch in Swift?
Method Dispatch is how a program selects which instructions to execute when invoking a method. It’s something that happens every time a method is called, and not something that you tend to think a lot about.
How do I find my APN authentication key?
Create the authentication keyIn your developer account, go to Certificates, Identifiers & Profiles, and under Keys, select All.Click the Add button (+) in the upper-right corner.Enter a description for the APNs Auth Key.Under Key Services, select the APNs checkbox, and click Continue.Click Confirm and then Download.Nov 10, 2020
What is method Swizzling Swift?
Peter Steinberger. iOS Development Swift. Swizzling (other languages call this “monkey patching”) is the process of replacing a certain functionality or adding custom code before the original code is called. For example, you could swizzle UIViewController.
What is method Swizzling in iOS?
Method swizzling is the process of changing the implementation of an existing selector at runtime. Simply speaking, we can change the functionality of a method at runtime. Note: This is an Objective-C runtime feature.
What is the difference between Swift 4 and 5?
Swift 5 is source compatible with Swift 4.2, but isn’t binary compatible with earlier Swift releases. However, future releases will be binary compatible with Swift 5 thanks to ABI stability. … You’ll find Swift Evolution proposal numbers like [SE-0001] in each section of the tutorial.
Is Swift static or dynamic?
But Swift itself is static, and in fact is explicitly designed in order to minimize or eliminate the use of Objective-C-type dynamism. Swift itself, is statically typed. When used with Cocoa, you get access to the objective-c runtime library which gives you the ability to use dynamic classes, messages and all.
What is Fcmtoken?
An FCM Token, or much commonly known as a registrationToken like in google-cloud-messaging. As described in the GCM FCM docs: An ID issued by the GCM connection servers to the client app that allows it to receive messages. Note that registration tokens must be kept secret.
What is firebase Swizzling?
The FCM SDK performs method swizzling in two key areas: mapping your APNs token to the FCM registration token and capturing analytics data during downstream message callback handling. Developers who prefer not to use swizzling can disable it by adding the flag FirebaseAppDelegateProxyEnabled in the app’s Info.