Overload +-*/ operator for Swift, make it easier to use (and not so strict)

Wei Wang

Last update: Jun 29, 2022

Related tags

Math Easy-Cal-Swift

Overview

Easy-Cal-Swift

Overview

This file is an overloading of +-*/ operator for Swift, to make it easier to use (and not so strict)

It can make your life with Swift easier when doing calculation between different type. Swift has a type check and requires left operand and the right one the same type. It causes a lot of trouble that we must convert the type every time.

var a = 3
var b = 2.0
a + b  //Compile error
a - b  //Oops, error again
a * b  //Wtf..
a / b  //God please save me

//You have to write these instead
Double(a) + b
Double(a) - b
Double(a) * b
Double(a) / b

Yes, it is type safe, but it is also time wasted.

Usage

Just put the Easy-Cal.swift to your project, and you can now have a traditional C-like implicit conversion between Int, Float and Double. So you can write as you would expect without annoying error messages.

var a = 3
var b = 2.0
a + b  //5.0
a - b  //1.0
a * b  //6.0
a / b  //1.5

UInt is also implemented, but it seems there is a bug in this beta seed PlayGround, in which there is a fatal error when you assign an UInt value :(. Fortunately, the UInt works well in project.

Risk

Yes, you lose type safe when using these operators, which is opposite to Swift design. But I find at almost all the time, you will know what you are doing with these numbers and the conversion will be just exactly what you want.

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Comments

Add CGFloat support

Thanks for your elegant work.

There may comes times that we dealing with UI calculation especially when rotating views.

So here CGFloat support comes.

opened by victorteokw 1

Overload +-*/ operator for Swift, make it easier to use (and not so strict)

Related tags

Overview

Easy-Cal-Swift

Overview

Usage

Risk

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Comments

Add CGFloat support

Owner

Wei Wang

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