I'm new to Swift and is trying to understand how to use Swift Standard Library Reference. I have past experience in Java and if I want to find a class or a class's method, I simply type e.g. String.charAt() Java SE8 in Google and the first result shown is the latest offical Oracle documentation on String class. However, if I want to find a class or method in Swift, when I type in e.g. pow() Swift Standard Library Reference, google only shows the main page to Swift Standard Library Reference, not the page of the class that actually contain the method. Could someone please tell me how to actually search the Swift Library? It would help me a great deal! Thanks in advance for any help!
if you are using Xcode just go to Help > Documentation and API Reference
Related
I'm converting the obj-c framework to the Swift one.
I need to convert this line:
__attribute__((weak)) extern NSString *sdkVersion = 0;
to Swift similar one. Spend a lot of time on google, but didn't find the answer.
Predicting your questions, what I'm trying to achieve... in short words, this global variable is defined in an optional framework. My Swift function should print this version in case if our SDK is linked with that framework.
I know, I can create a wrapper (another objc framework), add necessary getters there, and then link it with the main framework. But may be there is a more simple solution?
Thanks in advance.
I am learning Swift by myself on MacOS. When following the tutorial and practicing the array function: <array_name>.sort(), I can get it executed but I always wonder how it works and what is the actual algorithm inside it.
So is there any way to check the certain function definitions?
If you want to check the declaration of the function/class, you can command-click on it. If you want the documentation, you can either option-click it or check it on the API reference page. If you want to see the implementation details of the Swift standard library, check the source code here at GitHub. If the implementation you are checking is in a non open-source APIs though, you can't quite check it.
I've been trying to find Swift examples for FMDatabaseQueue.
All I have been able to find is Objective-C here: https://ccgus.github.io/fmdb/html/Classes/FMDatabaseQueue.html
Im not familiar with Objective-C and I'm new to Swift so I'm not sure how to port the code.
I've found what I was looking for here https://github.com/ccgus/fmdb/issues/291
There exists Swift wrappers for SQLite that may be a better fit that fmdb which can run in Swift but does not use Swift features such as type safety or error handling. See for example my GRDB.swift https://github.com/groue/GRDB.swift which was heavily influenced by ccgus/fmdb.
I was just wondering if there is any written documentation on realm swift for iOS 7, since it is combination of objective c and swift.
Just to be clear, I'm not looking for official documentation, just some guidelines so I have a clearer view of what to use.
Thank you for any help.
You should refer to Realm Objective-C's documentation guide (https://realm.io/docs/objc/latest) and API documentation (https://realm.io/docs/objc/latest/api), which is applicable even when used from Swift.
As our installation instructions recommend (https://realm.io/docs/objc/latest/#installation), you should also be using RLMSupport.swift which adds some useful helpers to use Realm Objective-C from Swift. That file's source is its best documentation, it's pretty small and should be fairly readable.
Finally, to determine the exact Swift syntax when calling Objective-C methods, I recommend you either use autocomplete, or command-click a Realm.framework token from Swift, which should display Xcode's auto-generated Swift interface for the Realm module.
I want to know list of methods of predefined classes in objective-c using any tool like "javap" in java.
In java, javap tool is used for getting list of all existing methods of class using command prompt.
Is it possible in objective-c? any tools are available?
Please help me.
Thank U.
you can use the objc runtime function class_copyMethodList, then enumerate the results for the info you are interested in.