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bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...加喜欢用tracepoints探针，因为tracepoints有稳定的应用程序编程接口。注意：现代linux系统(glibc >= 2.26)，open总是调用openat系统调用。
comm是内建变量，代表当前进程的名字。其它类似的变量还有pid和tid，分别表示进程标识和线程标...
Why can a class not be defined as protected?
...ement. It's not defined in Java, but similar things do exist; e.g. open in Kotlin which permits subclassing outside of the current package (one could imagine protected in Java preventing that, with the opposite default).
– Raphael
Oct 11 '18 at 9:17
...
Determine when a ViewPager changes pages
...
Kotlin Users,
viewPager.addOnPageChangeListener(object : ViewPager.OnPageChangeListener {
override fun onPageScrollStateChanged(state: Int) {
}
override fun onPageScrolled(position: Int,...
How do I parse command line arguments in Java?
...utocompletion, subcommands, and more. Written in Java, usable from Groovy, Kotlin, Scala, etc.
Features:
Annotation based: declarative, avoids duplication and expresses programmer intent
Convenient: parse user input and run your business logic with one line of code
Strongly typed everything - c...
How to detect shake event with android?
...
ported to Kotlin: gist.github.com/panchicore/7d3780a5bbe38de16a5f786e8ecff954
– panchicore
Jan 16 at 16:28
add...
Vertical (rotated) label in Android
...());
getLayout().draw(canvas);
canvas.restore();
}
}
EDIT
Kotlin version:
import android.content.Context
import android.graphics.Canvas
import android.text.BoringLayout
import android.text.Layout
import android.text.TextUtils.TruncateAt
import android.util.AttributeSet
import andro...
Animate the transition between fragments
...nt, f, FRAG_TAG) // FRAG_TAG is the tag for your fragment
.commit();
Kotlin version:
f = MyFragment().apply {
enterTransition = Slide(Gravity.END)
exitTransition = Slide(Gravity.START)
}
fragmentManager
.beginTransaction()
.replace(R.id.content, f, FRAG_TAG) // FRAG_TAG is the...
C++ Lock-free Hazard Pointer（冒险指针） - C/C++ - 清泛网 - 专注C/C++及内核技术
...还没有太多的了解。本文主要介绍 Hazard Pointer，一种无锁编程中广泛使用的安全内存回收方法，适用于需要高性能读、读多写少的场景。其论文可参考文献 1，标准草案可参考文献 2，代码实现可参考 Folly 中的 HazPtr。
2. Hazard Poi...
Using the “animated circle” in an ImageView while loading stuff
...
For the ones developing in Kotlin, there is a sweet method provided by the Anko library that makes the process of displaying a ProgressDialog a breeze!
Based on that link:
val dialog = progressDialog(message = "Please wait a bit…", title = "Fetchin...
Initialising mock objects - MockIto
...
In Kotlin, the rule looks like this: @get:Rule val mockitoRule: MockitoRule = MockitoJUnit.rule()
– Cristan
Mar 14 '18 at 11:51
...