aparler/RosettaCodeData
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Data update

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Ingy dot Net 2024-04-19 16:56:29 -07:00
parent 0df55f9f24
commit aec8ed51b6
1045 changed files with 18889 additions and 2777 deletions
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14
Task/Menu/Langur/menu.langur
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@ -1,15 +1,15 @@
val .select = f(.entries) {
if not isList(.entries): throw "invalid args"
val .select = impure fn(.entries) {
if .entries is not list: throw "invalid args"
if len(.entries) == 0: return ""
# print the menu
writeln join "\n", map(f $"\.i:2;: \.e;", .entries, 1..len .entries)
writeln join "\n", map(fn(.e, .i) $"\.i:2;: \.e;", .entries, 1..len .entries)
val .idx = toNumber read(
val .idx = number read(
"Select entry #: ",
f(.x) {
if not matching(RE/^[0-9]+$/, .x): return false
val .y = toNumber .x
fn(.x) {
if not .x -> RE/^[0-9]+$/: return false
val .y = number .x
.y > 0 and .y <= len(.entries)
},
"invalid selection\n", -1,