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JAVA线程池管理及分布式HADOOP调度框架搭建 - 人工智能(AI) - 清泛IT社区，...
...Thread类、实现java.lang.Runnable接口。
先看个例子，假设有100个数据需要分发并且计算。看下单线程的处理速度：package thread;
import java.util.Vector;
public class OneMain {
public static void main(String[] args) throws InterruptedExc...
How to get the number of characters in a std::string?
...trailing NULL), just dereference the first character.
const char *str = "\005hello";
std::cout << str + 1 << ":" << *str;
// Outputs "hello:5"
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Iterating over Java collections in Scala
...MutableIterator.Wrapper
– samg
Dec 30 '09 at 23:21
37
This answer is obsolete in Scala 2.8; see s...
Get a UTC timestamp [duplicate]
...t UTC.
– waterplea
Sep 18 '15 at 21:09
19
As a note, getTime() returns a Unix time-stamp adjusted...
TypeError: got multiple values for argument
...gs, **kwargs)
Then the call
color_box("blellow", color="green", height=20, width=30)
will fail because two values are assigned to color: "blellow" as positional and "green" as keyword. (painter.draw_box is supposed to accept the height and width arguments).
This is easy to see in the example, ...
What exactly does big Ө notation represent?
...
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edited Aug 20 '17 at 2:43
Pierre-Antoine Guillaume
54077 silver badges1919 bronze badges
a...
Javascript/jQuery: Set Values (Selection) in a multiple Select
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edited May 16 '13 at 9:02
answered May 16 '13 at 8:53
Ke...
Convert from ASCII string encoded in Hex to plain ASCII?
...
A slightly simpler solution:
>>> "7061756c".decode("hex")
'paul'
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Why is it impossible to build a compiler that can determine if a C++ function will change the value
...possible function.
Here's an easy example:
void foo() {
if (bar() == 0) this->a = 1;
}
How can a compiler determine, just from looking at that code, whether foo will ever change a? Whether it does or doesn't depends on conditions external to the function, namely the implementation of bar....
How to handle Objective-C protocols that contain properties?
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edited Apr 22 '16 at 14:10
Dan Rosenstark
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a...