85 lines
982 B
V
85 lines
982 B
V
fn foo() string {
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println('foo()')
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return 'foo'
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}
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fn foo2() string {
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println('start')
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defer {
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println('defer')
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}
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defer {
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println('defer2')
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}
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println('end')
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return foo()
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}
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fn test_defer() {
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assert foo2() == 'foo'
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}
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fn set_num(i int, mut n Num) {
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defer {
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println('exiting')
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n.val++
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}
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println('Hi')
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if i < 5 {
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return
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}
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else {
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n.val++
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}
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}
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fn set_num_opt(mut n Num) ?int {
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defer {
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n.val = 1
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}
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return 99
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}
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struct Num {
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mut:
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val int
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}
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fn (n Num) add(i int) int {
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return n.val + i
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}
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fn test_defer_early_exit() {
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mut sum := Num{0}
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for i in 0 .. 10 {
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set_num(i, mut sum)
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}
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println('sum: $sum.val')
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assert sum.val == 15
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}
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fn test_defer_option() {
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mut ok := Num{0}
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set_num_opt(mut ok) or {}
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assert ok.val == 1
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}
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fn test_defer_with_anon_fn() {
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mut f := &Num{val: 110}
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defer {
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assert f.add(1) == 111
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}
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go fn () {
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defer {
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println('deferred 1')
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}
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}()
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x := fn () {
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defer {
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println('defered 2')
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}
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return
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}
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x()
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return
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} |