Import when to use "" and <> objective-c

The objective-c is similar in this respect to C + +. Quotation marks are given to local files that are contained locally. (You need to indicate relative paths relative to the existing file). For angle brackets, it is a global path. Quotation marks are typically used when referencing classes in their own projects. Angle brackets <> Third-party libraries that are used in reference-system-provided libraries or are introduced by means of cocoapod.

An example of how to introduce a header file in a third-party open Source Library Sdwebimage

The header of the Sdwebimagedownloader file is referenced below

#import <Foundation/Foundation.h>

#import "SDWebImageCompat.h"

#import "SDWebImageOperation.h"

Import when to use "" and <> objective-c