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error handlind PathError explained

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This commit is contained in:
Mert Gör 🇹🇷 2024-02-15 18:29:06 +03:00
parent dcf1e5c80b
commit de39702db7
Signed by: hwpplayer1
GPG Key ID: 03E547D043AB6C8F
1 changed files with 28 additions and 22 deletions
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50
error_handling/demo1.go
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@ -1,24 +1,25 @@
/**
/*
*
error handling - trying to open a file which does not exist
BSD 3-Clause License
Copyright (c) 2024 Mass Collaboration Labs and contributors
# BSD 3-Clause License
# Copyright (c) 2024 Mass Collaboration Labs and contributors
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
@ -30,21 +31,26 @@ SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**/
*
*/
package error_handling
import "os"
import "fmt"
func Demo1(){
f, err := os.Open("demo1.txt")
if err!=nil{
fmt.Println("File does not exist")
}else{
func Demo1() {
f, err := os.Open("demo11.txt")
if err != nil {
if pErr, ok := err.(*os.PathError); ok {
fmt.Println("File does not exist : ", pErr.Path)
return
} else {
fmt.Println("File does not exist")
return
}
} else {
fmt.Println(f.Name())
}
}
}