Go Package os: Difference between revisions
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| Line 9: | Line 9: | ||
=Reading and Writing an Entire File in/from Memory= | =Reading and Writing an Entire File in/from Memory= | ||
==Read with <tt>ReadFile()</tt>== | |||
To read the content of an entire file into a byte slice: | To read the content of an entire file into a byte slice: | ||
<syntaxhighlight lang='go'> | <syntaxhighlight lang='go'> | ||
bs, err := os.ReadFile("/Users/ovidiu/tmp/test.txt") | bs, err := os.ReadFile("/Users/ovidiu/tmp/test.txt") | ||
</syntaxhighlight> | </syntaxhighlight> | ||
==Write with <tt>WriteFile()</tt>== | |||
To write in-memory data into a file: | To write in-memory data into a file: | ||
<syntaxhighlight lang='go'> | <syntaxhighlight lang='go'> | ||
Revision as of 18:27, 25 August 2023
External
Internal
Overview
Reading and Writing an Entire File in/from Memory
Read with ReadFile()
To read the content of an entire file into a byte slice:
bs, err := os.ReadFile("/Users/ovidiu/tmp/test.txt")
Write with WriteFile()
To write in-memory data into a file:
s := "This\nis multi-line\nfile\ncontent\n"
err := os.WriteFile("/Users/ovidiu/tmp/test2.txt", []byte(s), 0777)
os.ReadFile and os.WriteFile close the file after use.
TO DEPLETE
External
Internal
Functions
os.Open()
Works with files and directories.
os.Create()
os.File
os.File Methods
FileInfo
FileInfo Methods
- Size()
os.Args
os.Args is a string slice that holds the command-line arguments, starting with the program name. For more details on how to use see: