Golang conditionals: Difference between revisions
From wikinotes
Line 3: | Line 3: | ||
<syntaxhighlight lang="go"> | <syntaxhighlight lang="go"> | ||
if 1 > 0 { | if 1 > 0 { | ||
// ... | |||
} else if 2 > 0 { | |||
// ... | |||
} else { | |||
// ... | |||
} | } | ||
</syntaxhighlight> | </syntaxhighlight> |
Revision as of 23:58, 5 June 2022
If Statements
if 1 > 0 { // ... } else if 2 > 0 { // ... } else { // ... }Similar to for loops, go's if statements can use an initializer.
if err := file.Chmod(0664); err != nil { log.Print(err) } // common in hash tests if _, ok := myMap["someKey"]; ok { // eval if key present }Short Circuiting
// the final 'false' is never evaluated, because the second is true if false || true || false { ... }
Switch Statements
Regular switch statements that test specific variable
switch var { case 'a', 'b', 'c': fmt.Println("is a, b, or c") case 'd', 'e', 'f': fmt.Println("is d, e, or f") }Switch statements can also test different variables
switch { case '0' <= number: fmt.Println("is zero") case 'a' <= letter: fmt.Println("is a") }