mirror of
https://github.com/vlang/v.git
synced 2023-08-10 21:13:21 +03:00
0024ff848d
These checks allows for:
a) `x := call() or { 'abc' }`
b) `x := call() or { panic('abc') }`
c) `x := call() or { exit(123) }`
d) `x := call() or { continue }`
e) `x := call() or { break }`
f) `x := call() or { return }`
... but produce errors for:
g) `x := call() or { println('an error') }` , etc.
63 lines
702 B
V
63 lines
702 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, n mut 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(n mut 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 test_defer_early_exit() {
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mut sum := Num{
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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)
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assert ok.val == 1
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}
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