lutils

Some commonly used tools in development

dfo

The name "dfo" is derived from the homophonic sound of "default".

This package can safely load pointer values and replace empty pointers with default values.

goget-ugithub.com/liang09255/lutils/dfo

Example:

nums1, nums2:=1, 1addTwoNum:=func(a*int, b*int) int {
// This is a service which can add two numbersreturndfo.IntPtr(a) +dfo.IntPtr(b)
}
addTwoNum(nil, nil) // 0 dfo turn nil to 0addTwoNum(&nums1, nil) // 1addTwoNum(nil, &nums2) // 1addTwoNum(&nums1, &nums2) // 2

Without dfo, we will implement the function like this, dfo can make the code look cleaner

addTwoNum:=func(a*int, b*int) int {
num1, num2:=0, 0ifa!=nil {
num1=*a }
ifb!=nil {
num2=*b
}
returnnum1+num2
}

conv

This package can convert the type of a variable to another type.

We can use conv.SetLogger to set logger, conv will automatically collect errors into logger

goget-ugithub.com/liang09255/lutils/conv

Example:

str:="1.0"i1:=conv.ToInt(str) // 1 (int)ui1:=conv.ToUint(str) // 1 (uint)f1:=conv.ToFloat64(str) // 1 (float64)str="true"b:=conv.ToBool(str) // true (bool)m:=map[string]string{"a": "b"}
jsonContent:=conv.ToJSON(m) // {"a":"b"}arr:= []string{"a", "b", "c"}
m1:=conv.ArrayToMap(arr) // map[a:{} b:{} c:{}]_, ok1:=m1["a"] // ok1 => true_, ok2:=m1["d"] // ok2 => falsem2:=conv.ArrayToBoolMap(arr)
ok3:=m2["a"] // trueok4:=m2["d"] // false

// use loggerconv.SetLogger(Logger)
// logger need to implement interface Logger// type Logger interface {// Info(args ...interface{})// Warn(args ...interface{})// Error(args ...interface{})//	}