kemchenj

require 'json'

def base_type?(element)
  element.is_a?(Numeric) || element.is_a?(String) || element.is_a?(TrueClass) || element.is_a?(FalseClass)
end

def base_type_array?(arr)
  base_type?(arr.first)
end

kemchenj

//
//  main.c
//  jkasdfj
//
//  Created by kemchenj on 2018/7/13.
//  Copyright © 2018 kemchenj. All rights reserved.
//

#include <stdio.h>

kemchenj

extension UITextView {

    func correctSelection() {
        let currentSelectedRange = selectedRange
        let wholeRange = attributedText.wholeRange

        let emptyRange = NSRange()
        var lowerAttributeEffectiveRange = NSRange()
        var upperAttributeEffectiveRange = NSRange()

kemchenj

import Foundation

final class Sample: NSObject {
    @objc dynamic var name: String = ""
}

class MyObj: NSObject {
    @objc dynamic var test: String = ""
}

kemchenj

import Foundation

extension Sequence where Element: Hashable {
    var frequencies: [Element: Int] {
        return Dictionary(lazy.map { ($0: 1) }, uniquingKeysWith: +)
    }
}