Member since Sep 29, 2007, follows 5 people, 5 public groups, 702 public bookmarks (757 total).

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  • The Swift Programming Language: A Swift Tour on Jun 02, 14
    • Use let to make a constant and var to make a variable.
  • Does your kid need a LinkedIn profile? - MarketWatch on May 26, 14
  • Stevey's Blog Rants: Get that job at Google on May 25, 14
    • But the gold mine is the second half of the book, which is a sort of encyclopedia of 1-pagers on zillions of useful problems and various ways to solve them, without too much detail.
    • You should especially know about the most famous classes of NP-complete problems, such as traveling salesman and the knapsack problem, and be able to recognize them when an interviewer asks you them in disguise.
    • You should find out what NP-complete means

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  • Boost智能指针——weak_ptr - 天方 - 博客园 on May 20, 14
    • 弱引用能检测到所管理的对象是否已经被释放,从而避免访问非法内存
  • 八位二进制数为什么表示范围是:-128~~+127? - steel的专栏 - 博客频道 - CSDN.NET on May 17, 14
    • 引入了补码概念. 负数的补码就是对反码加一,而正数不变,正数的原码反码补码是一样的.在补码中用(-128)代替了(-0),所以补码的表示范围为:
  • What does a just-in-time (JIT) compiler do? - Stack Overflow on May 17, 14
    • A JIT compiler runs after the program has started and compiles the code (usually bytecode or some kind of VM instructions) on the fly (or just-in-time, as it's called) into a form that's usually faster, typically the host CPU's native instruction set. A JIT has access to dynamic runtime information whereas a standard compiler doesn't and can make better optimizations like inlining functions that are used frequently.
  • Blocks | Ry's Objective-C Tutorial | RyPress on May 16, 14
    • The fact that non-local variables are copied as constants means that a block doesn’t just have access to non-local variables—it creates a snapshot of them.
    • Freezing non-local variables as constant values is a safe default behavior in that it prevents you from accidentally changing them from within the block; however, there are occasions when this is desirable. You can override the const copy behavior by declaring a non-local variable with the __block storage modifier:
    • They solve the same problem as function pointers, but the fact that they can be defined inline makes the resulting code much easier to read

    2 more annotations...

  • TinkerGame - Learning by playing games, tinkergame.com on Jan 16, 14
  • PythonSpace - Tingkr.com on Jan 07, 14
  • 众筹需要注意的5个点_理财频道_华讯财经 on Nov 07, 13
    • 曾有一位企业家这样说过:“我喜欢 Kickstarter 的主要原因在于它能帮你验证一个想法是否真正有价值。花少许时间少许钱做段视频写点文案放在 Kickstarter 的平台上,你就能知道人们是否会为你的产品或想法买单。相比传统渠道,从 Kickstarter 能融到的钱根本不算什么,真正的收获在于你能探知这块市场的潜力到底有多少。”
    • 把你的项目放到网上,等于是给山寨党出主意。如果你的创意本来独一无二,那山寨党就会让你没饭吃,你最好还是放弃众筹的想法。
    • 对于比较独特的创意,不如考虑注册个临时性专利短期有效、不受到实际审查的专利,然后再进行下一步计划。

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