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Get operating system info
I recently started wondering about sites like http://thismachine.info/ that get the user's operating system info. I have not been able to find out how to do that with PHP, and wanted to try to figure it out.
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Rails: Open link in new tab (with 'link_to')
...rget: :_blank parameter should be a parameter of link_to, whereas you put it in image_tag parameters. Modify your code like this:
<%= link_to image_tag("facebook.png", class: :facebook_icon, alt: "Facebook"), "http://www.facebook.com/mypage", target: :_blank %>
Or with a block:
<%= lin...
Split a string by a delimiter in python
How to split this string where __ is the delimiter
3 Answers
3
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Why declare unicode by string in python?
...le you've saved is utf-8. The default for Python 2 is ASCII (for Python 3 it's utf-8). This just affects how the interpreter reads the characters in the file.
In general, it's probably not the best idea to embed high unicode characters into your file no matter what the encoding is; you can use st...
How to find list intersection?
...and b = [1,1,3,5,6] then the intersection is [1,1,3,5] but by above method it will result in only one 1 i.e. [1, 3, 5] what will be the write way to do it then?
– Nitish Kumar Pal
Oct 10 '18 at 5:18
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Call one constructor from another
...follow
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edited Aug 20 '19 at 18:13
AustinWBryan
2,86133 gold badges1616 silver badges3535 bronze badges
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腾讯Tencent开源框架介绍（持续更新） - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...h>
#include <stdio.h>
#include <stdlib.h>
#include <queue>
#include "co_routine.h"
using namespace std;
/**
* 本实例是对条件变量的展示，其作用类似于pthread_cond_wait
*/
struct stTask_t
{
int id;
};
struct stEnv_t
{
stCoCond_t* cond;
queue<stTask_t*> task_queue...
Types in MySQL: BigInt(20) vs Int(20)
...dering what the difference between BigInt , MediumInt , and Int are... it would seem obvious that they would allow for larger numbers; however, I can make an Int(20) or a BigInt(20) and that would make seem that it is not necessarily about size.
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How to force ASP.NET Web API to always return JSON?
...ly JSON in ASP.NET Web API – THE RIGHT WAY
Replace IContentNegotiator with JsonContentNegotiator:
var jsonFormatter = new JsonMediaTypeFormatter();
//optional: set serializer settings here
config.Services.Replace(typeof(IContentNegotiator), new JsonContentNegotiator(jsonFormatter));
JsonConte...
Programmatically get the cache line size?
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On Linux (with a reasonably recent kernel), you can get this information out of /sys:
/sys/devices/system/cpu/cpu0/cache/
This directory has a subdirectory for each level of cache. Each of those directories contains the following fi...