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Object.getOwnPropertyNames vs Object.keys
... object. Here is something that got me.
const cat1 = {
eat() {},
sleep() {},
talk() {}
};
// here the methods will be part of the Cat Prototype
class Cat {
eat() {}
sleep() {}
talk() {}
}
const cat2 = new Cat()
Object.keys(cat1) // ["eat", "sleep", "talk"]
Object.keys(Ob...
How to measure elapsed time in Python?
...() - t
The new function process_time will not include time elapsed during sleep.
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Get exit code of a background process
...cript:
# simulate a long process that will have an identifiable exit code
(sleep 15 ; /bin/false) &
my_pid=$!
while ps | grep " $my_pid " # might also need | grep -v grep here
do
echo $my_pid is still in the ps output. Must still be running.
sleep 3
done
echo Oh, it looks like ...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...大小并不固定，可动态扩张或缩减。当进程调用malloc 等函数分配内存时，新分配的内存就被动态添加到堆上（堆被扩张）；当利用free 等函数释放内存时，被释放的内存从堆中被剔除（堆被缩减）
栈(stack)：栈又称堆栈， 是用...
Wait 5 seconds before executing next line
...s (specifically testing) this is woefully inadequate. What if you need to sleep for 500ms before returning from the function, for instance to simulate a slow async http request?
– A.Grandt
Sep 22 '16 at 9:17
...
Python function attributes - uses and abuses [closed]
...eturn _sw
# test code
sw=stopwatch()
sw2=stopwatch()
import os
os.system("sleep 1")
print sw() # defaults to "SW_DELTA"
sw( SW_MARK )
os.system("sleep 2")
print sw()
print sw2()
1.00934004784
2.00644397736
3.01593494415
...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的私有成员。为了去除这种差异，编译器会产生一些仿造函数：
/*package*/ static int Foo.access$100(Foo foo) {
return foo.mValue;
}
/*package*/ static void Foo.access$200(Foo foo, int value) {
foo.doStuff(value);
}
每当内部类需要访问外部类中的mVa...
How to handle :java.util.concurrent.TimeoutException: android.os.BinderProxy.finalize() timed out af
...xperimentation.
The root of the problem is at the point a device "Goes to Sleep" for a while - this means that the OS has decided to lower the battery consumption by stopping most User Land processes for a while, and turning Screen off, reducing CPU cycles, etc. The way this is done - is on a Linux...
Google Espresso or Robotium [closed]
...mly because of timing issues. Most test authors ignore this fact, some add sleeps/retry mechanisms and even fewer implement more sophisticated thread safety code. None of these are ideal. Espresso takes care of thread safety by seamlessly synchronizing test actions and assertions with the UI of the ...
How to do ssh with a timeout in a script?
...te host is taking an infinite time to run": "ssh -o ConnectTimeout=5 host 'sleep 10'" waits for 10 seconds, not 5.
– Ferry Boender
Oct 11 '16 at 18:37
...