utils

Documentation

Index

• func ForEachRange(totalSize int, maxSubRangeSize int, handler func(from, to int) error) error
• func IsNil(v interface{}) bool
• func JsonMarshal(v interface{}) ([]byte, error)

Functions

func ForEachRange

func ForEachRange(totalSize int, maxSubRangeSize int, handler func(from, to int) error) error

ForEachRange is simple utility calling given function for each sub-range defined within [0-totalSize]. It wont be called however if range is empty. For example, MakeRanges(35, 10, fc) will result in fc being called 4 times with arguments: * 0-10 * 10-20 * 20-30 * 30-35 It can be used to split slice into smaller ones. Params totalSize must not be less than 0, maxSubRangeSize must be bigger than 0. If those are not met, function panics. If given function returns error, iteration stops and ForEachRange returns that error

func IsNil

func IsNil(v interface{}) bool

func JsonMarshal

func JsonMarshal(v interface{}) ([]byte, error)