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成功熬了四年还没死？一个IT屌丝创业者的深刻反思 - 资讯 - 清泛网 - 专注C...
...，已经达到了十七八万。
屌丝们不得不面对一个终极问题：如何盈利?
屌丝们定了三盘沙县水饺，围着一箱子的冰啤酒开始计算：按照最近一月的登陆情况来看，四百万个账号已经不活跃了。真正有商业价值的只有一百万...
What's the difference between the atomic and nonatomic attributes?
... Given that any thread-safe code will be doing its own locking etc, when would you want to use atomic property accessors? I'm having trouble thinking of a good example.
– Daniel Dickison
May 24 '11 at 20:00
...
The application may be doing too much work on its main thread
... in a vast array of hardware unlike ios
and windows devices. The RAM and CPU varies and if you want a
reasonable performance and user experience on all the devices then you
need to fix this thing. When frames are skipped the UI is slow and
laggy, which is not a desirable user experience.
...
Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
...p into your build/deployment scripts. The advantages are:
It requires no CPU for Apache to gzip the content when the file is requested.
The files are gzipped at the highest compression level (assuming gzip -9).
You're serving the file from a CDN.
Assuming that your CSS/JavaScript files are (a) m...
Is optimisation level -O3 dangerous in g++?
...
In the early days of gcc (2.8 etc.) and in the times of egcs, and redhat 2.96 -O3 was quite buggy sometimes. But this is over a decade ago, and -O3 is not much different than other levels of optimizations (in buggyness).
It does however tend to reveal ca...
Custom CSS Scrollbar for Firefox
...and has loads of parameters you can tweak, but it ended up being a bit too CPU intensive for me (and it adds a fair amount to the DOM).
Now I'm giving Perfect Scrollbar a go. It's simple and lightweight (6KB) and it's doing a decent job so far. It's not CPU intensive at all (as far as I can tell) a...
Do you have to put Task.Run in a method to make it async?
...<T> or one of its shortcuts (TaskFactory.FromAsync, Task.FromResult, etc). I don't recommend wrapping an entire method in Task.Run; synchronous methods should have synchronous signatures, and it should be left up to the consumer whether it should be wrapped in a Task.Run:
private int DoWork()...
When to use Task.Delay, when to use Thread.Sleep?
...e quite heavy whereas the cooperative multi-tasking provided by Task.Delay etc is designed to avoid all of that overhead, maximize throughput, allow cancellation, and provide cleaner code.
– Corillian
May 3 '16 at 16:06
...
What is the best way to concatenate two vectors?
...ny changes directly made to either A or B (like assigning values,
sorting, etc.) will also "modify" AB. This is not necessarily bad
(actually, it can be very handy: AB does never need to be explicitly
updated to keep itself synchronized to both A and B), but it's
certainly a behavior one must be awa...
Postgres: “ERROR: cached plan must not change result type”
...stgres 10 instance, enabling the conservative setting does result in extra CPU usage on the database server. It wasn't much though, I could only even see the autosave functionality show up as using a measurable amount of CPU after I'd tuned every single query my load test was using and started push...