num

num — numeric & matrix utilities

import "github.com/downsized-devs/sdk-go/num"

Stability: Stable — see STABILITY.md

Features

• SafeDivision(numerator, denominator, zeroValue) — guarded division.
• RandomString(n) — alphanumeric random string of length n.
• RoundFloat — round to N decimal places (see rounding.go).
• EmptyStringSlice(length) — pre-sized []string{"", "", ...}.
• ExcelGenerateCoords(ctx, range) — expand D10:D13 into [D10, D11, D12, D13].

Installation

go get github.com/downsized-devs/sdk-go/num

Quick Start

import "github.com/downsized-devs/sdk-go/num"

result := num.SafeDivision(10, 0, true)        // 0
random := num.RandomString(12)                  // "aB3kX..."
cells, _ := num.ExcelGenerateCoords(ctx, "A1:A3") // ["A1","A2","A3"]

API Reference

Dependencies

• External: github.com/xuri/excelize/v2

Testing

go test ./num/...

Five test files; RandomString test overrides the now var for determinism.

Contributing

See CONTRIBUTING.md.

Related Packages

• stringlib — older random-string helper.
• convert — numeric type conversion.