Empty string: Difference between revisions

=={{header|Vlang}}==

<lang vlang>// define and initialize an empty string

mut s := ""

// assign an empty string to a variable

s = ""

// check that a string is empty, any of:

s == ""

s.len() == 0

// check that a string is not empty, any of:

s != ""

s.len() != 0 // or > 0</lang>

::<lang vlang>fn test(s string) {

if s.len() == 0 {

println("empty")

} else {

println("not empty")

}

}

fn main() {

// assign an empty string to a variable.

str1 := ""

str2 := " "

// check if a string is empty.

test(str1) // prt empty

// check that a string is not empty.

test(str2) // prt not empty

}</lang>