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Swift Imports


The import directive can be used to import definitions from another Swift file.

For example, a Swift script might contain this:

import "defs";
file f;

which would import the content of defs.swift:

type file;
Imported files are read from two places. They are either read from the path that is specified from the import command,such as:

import "definitions/file/defs";

or they are read from the environment variable SWIFT_LIB. This environment variable is used just like the PATH environment variable. For example, if the command below was issued to the bash shell:

export SWIFT_LIB=${HOME}/Swift/defs:${HOME}/Swift/functions

then the import command will check for the file defs.swift in both "${HOME}/Swift/defs" and "${HOME}/Swift/functions" first before trying the path that was specified in the import command.

Other valid imports:

import "../functions/func"
import "/home/user/Swift/definitions/defs"

There is no requirement that a module is imported only once. If a module is imported multiple times, for example in different files, then Swift will only process the imports once.

Imports may contain anything that is valid in a Swift script, including the code that causes remote execution.

Conclusion

In this page (written and validated by ) you learned about Swift Imports . What's Next? If you are interested in completing Swift tutorial, your next topic will be learning about: Swift Mappers.



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