In R, function may not be as special as it is in other programming languages; it is regarded as one of the many types and can be passed as an argument to some other function. The way we deal with other objects such list and data.frame definitely applies to function. Here is a simple example in which we define two funct继续阅读 »
The motivation of pipeline operator is to make code more readable. In many cases, it indeed better organizes code so that the logic is presented in human-readable fluent style. In other cases, however, such operators can make things worse.继续阅读 »
Version：Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600 64 bit (AMD64)] on win32
There are two ways of constructing a software design: one way is to make it so simple that there are obviously no deficiences; the other is to make it so complicated that there are no obvious deficiences.
---- C.A.R.继续阅读 »
Named namespaces in Google Code Style
Namespaces wrap the entire source file after includes, gflags definitions/declarations and forward declarations of classes from other namespaces.继续阅读 »
For those who don't know, Barbican is an OpenStack service which provides a REST API designed for the secure storage, provisioning and management of secrets such as passwords, encryption keys and X.509 certificates. Barbican can be used together with other OpenStack services to provide security features, e.g. Octavia u继续阅读 »
Solution & Estimations:
Current solution is to 1.) let Swarm launch tasks by Mesos 2.) for the other API, let Swarm send request to docker engine directly (red arrow)继续阅读 »
Goal of K8S Security
Ensure a clear isolation between the container and the underlying host it runs on
Limit the ability of the container to negatively impact the infrastructure or other containers
Principle of Least Privilege - ensure components are only authorized to perform the actions they need, and limit the scop继续阅读 »
tbox add a coroutine library with stackfull mode and provide the following features.
1. yield
2. suspend and resume
3. sleep
4. io scheduler with (epoll, poll, kqueue, select, poll ..)
5. supports stream, http and other all io modules of tbox
6. channel
7. lock
8. semaphore继续阅读 »
#include <stdio.h>
#include<limits.h>
/* return last byte of x or other bytes of y*/
unsigned bytefun(unsigned x,unsigned y)
{
return ((x<<24)>>24)|(y&(UINT_MAX-0xff));
}
int main()
{
unsigned x = 0x89ABCDEF;
unsigned y = 0x76543210;
printf("%x",bytefun(x,y));
return 0;
}继续阅读 »
Sources
Changelog
New features
Add task api for running custom tasks
Add plugin expansion and provide some builtin plugins
Add export ide project plugin(.e.g makefile and will support to export other projects for vs, xcode in feature)
Add demo plugin for printing 'hello xmake'
Add make doxygen documents plugin
Add m继续阅读 »