zhongwuzw

legacy = UIGraphicsBeginImageContextWithOptions + UIGraphicsEndImageContext

modern = UIGraphicsImageRendererFormat + UIGraphicsImageRenderer

Take aways:

• "modern" w/ prefersExtendedRange = NO
  • basically the same perf as "legacy"
  • probably a good idea to adopt since optimizations will likely be in "modern" first
• "modern" w/ prefersExtendedRange = YES

zhongwuzw

class ArrayImpl<T> {
    var space: Int
    var count: Int
    var ptr: UnsafeMutablePointer<T>!
    
    init(count: Int = 0, ptr: UnsafeMutablePointer<T>? = nil) {
        self.count = count
        self.space = count
        
        self.ptr = UnsafeMutablePointer<T>.allocate(capacity: count)

zhongwuzw

import re
f = open("C:/Users/laicai/Desktop/a.txt","r")
f1 = open("C:/Users/laicai/Desktop/zhongwu.txt","w")
for line in f:
    pattern = re.compile(r'\b(91\w*)')
    temp = pattern.search(line).groups()
    f1.write("'0x")
    f1.write(temp[0])
    f1.write("',")
f.close()