software dev | nixos user many of my posts are comedic & satirical.
![2 implementations of the same problem in js (left) and go (right), the go solution is much longer
JS code on left
```js
function categoryExpenses(records: ExpenseRecord[], period: Period, category: string) {
if (!records.map(a=>a.category).includes(category))
return new Error(`unknown category ${category}`)
const recordsWithinPeriod = records
.filter(record => record.day >= period.from && record.day <= period.to)
return recordsWithinPeriod.reduce((acc, v) => acc + v.amount, 0)
}
```
GO code on right
```go
func CategoryExpenses(in []Record, period DaysPeriod, cat string) (float64, error) {
var sum float64 = 0
hasCategory := false
for _, record := range in {
if record.Category != cat {
continue
}
hasCategory = true
if isRecordInPeriod(record, period) {
sum += record.Amount
}
}
if !hasCategory {
return 0, fmt.Errorf("unknown category %s", cat)
}
return sum, nil
}
```](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:inwfsjzvui5v76yajoxd6noc/bafkreigzumrg6dhwulparvzzozvjjlfiekk5iujnujtq5sr7x6srokmk3q)
![screenshot of discord, @mochie.being.dog saying:
would you knock me up,,, ses,,,
pernant]
i ger plorgnoit
girtyhj,,,,
mmmm cockers
knot meeeee
pleeease](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:inwfsjzvui5v76yajoxd6noc/bafkreidhbwvcm5l5kltwnom72n3hvwfmkuw6qqgbbumtwzkcowpnrdgnq4)
![Screenshot of bsky header, custom feeds are [mutuals, onlyPosts, webDevelopmentTrending]](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:inwfsjzvui5v76yajoxd6noc/bafkreifpugrwkjxhsni7kqgkkprpjkreqtverbosr4ciqbwuxcpoxpnfni)
software dev | nixos user many of my posts are comedic & satirical.