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How do I convert Long to byte[] and back in java
...ion methods from Google Guava.
Example:
byte[] bytes = Longs.toByteArray(12345L);
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栈和队列的面试题Java实现 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
public Node head;
public Node current;
//方法：入栈操作
public void push(int data) {
if (head == null) {
head = new Node(data);
current = head;
} else {
Node node = new Node(data);
node.pre = current...
Spring Boot - inject map from application.yml
...eholders being replaced. E.g. if you had a system property project.version=123 set, the example you gave in the answer would return version=123, while after setting locations it would return project.version=${project.version}. Do you know if there's a limitation of some sorts here?
...
Differences between unique_ptr and shared_ptr [duplicate]
...ou pass it by value if you cannot copy it?
– splinter123
Jun 3 '16 at 22:00
11
@splinter123: By m...
What __init__ and self do on Python?
...iable declared inside an __init__ function:
class MyClass(object):
i = 123
def __init__(self):
self.i = 345
a = MyClass()
print(a.i)
print(MyClass.i)
Output:
345
123
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廉价共享存储解决方案1-drbd+ha+nfs - 更多技术 - 清泛网 - 专注C/C++及内核技术
...（注意：drbd和drbd-utils的版本要对应起来）
2.2安装操作系统，配置IP地址，关闭防火墙，selinux 关闭NetworkManager，修改/etc/hosts,配置YUM (三台机器都需要操作)
2.2.1安装操作系统
省略
2.2.2配置IP地址
省略
由于我是...
逆向工程——二进制炸弹(CSAPP Project) - 操作系统(内核) - 清泛网 - 专注...
逆向工程——二进制炸弹(CSAPP Project)实验文件：http: files cnblogs com remlostime bomb zip题中给出了一个二进制文件（可执行文件），共6个关卡，每关要输入一个密码才能过 实验文件：bomb.zip
题中给出了一个二进制文件（可执行...
Pandas - Get first row value of a given column
...ime'] = x does not work:
In contrast, assignment with df.iloc[0]['bar'] = 123 does not work because df.iloc[0] is returning a copy:
In [66]: df.iloc[0]['bar'] = 123
/home/unutbu/data/binky/bin/ipython:1: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame
Se...
Linux常用命令（持续更新...） - C/C++ - 清泛网 - 专注C/C++及内核技术
Linux常用命令（持续更新...）Linux启动、停止、查询系统服务的命令：chkconfig --list #列出所有的系统服务chkconfig --add xxx #增加xxx系统服...Linux启动、停止、查询系统服务的命令：
chkconfig --list #列出所有的系统服...
Linux编程中各种头文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
....h：提供对/etc/shadow文件访问的函数
pthread.h：提供多线程操作的函数
signal.h：提供对信号操作的函数
sys/wait.h、sys/ipc.h、sys/shm.h：提供进程等待、进程间通讯（IPC）及共享内存的函数
建议：在编写网络程序时，可以直接使...