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How to write log to file
...r me:
f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work for log.SetOutput, because i...
What APIs are used to draw over other apps (like Facebook's Chat Heads)?
...
This one:
Allows an application to open windows using the type
TYPE_SYSTEM_ALERT, shown on top of all other applications.
Very few applications should use this permission; these windows are intended
for system-level interaction with the u...
Draw text in OpenGL ES
... TextView over your SurfaceView. This is slow and bad, but the most direct approach.
Render common strings to textures, and simply draw those textures. This is by far the simplest and fastest, but the least flexible.
Roll-your-own text rendering code based on a sprite. Probably second best choice if...
What's the difference between using CGFloat and float?
...it will jump to the CGBase.h header where the typedef is defined. The same approach is used for NSInteger and NSUInteger as well.
These types were introduced to make it easier to write code that works on both 32-bit and 64-bit without modification. However, if all you need is float precision within...
How do I avoid capturing self in blocks when implementing an API?
I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
Pagination in a REST web application
...ept of page changes with the context; one user of your API may be a mobile app, that can consume only 2 products per page, while the other is a machine app that can consume the whole damn list. In short, page is a "representation" of the underlying domain entity (product) and should not be included ...
Why Choose Struct Over Class?
...ying is way safer than having multiple references to the same instance as happens with classes. This is especially important when passing around a variable to many classes and/or in a multithreaded environment. If you can always send a copy of your variable to other places, you never have to worry a...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 var _hmt = _hmt || []; (function() ...
When is TCP option SO_LINGER (0) required?
...
I totally agree. I have seen a monitoring application which was initiating many (a few thousands short lived connections every X seconds), and it had probem to scale bigger (a thousand connection more). I don't know why, but the applicatoin was non responsive. Someon...
Android file chooser [closed]
...nager?
If I cannot , is there a better way to include a file manager in my app?
Thx
2 Answers
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