/
dup.js
49 lines (45 loc) · 867 Bytes
/
dup.js
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"use strict"
function dupe_array(count, value, i) {
var c = count[i]|0
if(c <= 0) {
return []
}
var result = new Array(c), j
if(i === count.length-1) {
for(j=0; j<c; ++j) {
result[j] = value
}
} else {
for(j=0; j<c; ++j) {
result[j] = dupe_array(count, value, i+1)
}
}
return result
}
function dupe_number(count, value) {
var result, i
result = new Array(count)
for(i=0; i<count; ++i) {
result[i] = value
}
return result
}
function dupe(count, value) {
if(typeof value === "undefined") {
value = 0
}
switch(typeof count) {
case "number":
if(count > 0) {
return dupe_number(count|0, value)
}
break
case "object":
if(typeof (count.length) === "number") {
return dupe_array(count, value, 0)
}
break
}
return []
}
module.exports = dupe