73 lines
1.1 KiB
Go
73 lines
1.1 KiB
Go
package go_koans
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import "fmt"
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func aboutControlFlow() {
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{
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a, b, c := 1, 2, 3
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assert(a == 1) // multiple assignment
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assert(b == 2) // can make
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assert(c == 3) // life easier
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}
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var str string
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{
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if 3.14 == 3 {
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str = "what is love?"
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} else {
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str = "baby dont hurt me"
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}
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assert(str == "baby dont hurt me") // no more
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if length := len(str); length == 17 {
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str = "to be"
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} else {
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str = "or not"
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}
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assert(str == "to be") // that is the question
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}
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{
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hola1, hola2 := "ho", "la"
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switch "hello" {
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case "hello":
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str = "hi"
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case "world":
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str = "planet"
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case fmt.Sprintf("%s%s", hola1, hola2):
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str = "senor"
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}
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assert(str == "hi") // cases can be of any type, even arbitrary expressions
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switch {
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case false:
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str = "first"
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case true:
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str = "second"
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}
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assert(str == "second") // in the absence of value, there is truth
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}
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{
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n := 0
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for i := 0; i < 5; i++ {
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n += i
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}
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assert(n == 10) // for can have the structure with which we are all familiar
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}
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{
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n := 1
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for {
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n *= 2
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if n > 20 {
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break
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}
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}
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assert(n == 32) // though omitting everything creates an infinite loop
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}
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}
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