Example
A simple if statement:
if a == b {
// do something
}
Note that there are no parentheses surrounding the condition and that the opening curly brace { must be on the same line. The following will not compile:
if a == b
{
// do something
}
An if statement making use of else:
if a == b {
// do something
} else if a == c {
// do something else
} else {
// do something entirely different
}
Per golang.org's documentation, "The expression may be preceded by a simple statement, which executes before the expression is evaluated." Variables declared in this simple statement are scoped to the if statement and cannot be accessed outside it:
if err := attemptSomething(); err != nil {
// attemptSomething() was successful!
} else {
// attemptSomething() returned an error; handle it
}
fmt.Println(err) // compiler error, 'undefined: err'
