大约有 24,000 项符合查询结果（耗时：0.0243秒） [XML]
C++ convert hex string to signed integer
... << std::hex << "fffefffe";
ss >> x;
the following example produces -65538 as its result:
#include <sstream>
#include <iostream>
int main() {
unsigned int x;
std::stringstream ss;
ss << std::hex << "fffefffe";
ss >> x;
// out...
Rails: How do I create a default value for attributes in Rails activerecord's model? [duplicate]
...
You can set a default option for the column in the migration
....
add_column :status, :string, :default => "P"
....
OR
You can use a callback, before_save
class Task < ActiveRecord::Base
before_save :default_values
def default_values...
How can I mark “To Do” comments in Xcode?
...
You can use XToDo plugin
https://github.com/trawor/XToDo
use ctrl+t to trigger the List Window on/off
Easy install with alcatraz
use ctrl+t to trigger the List Window on/off
...
What is the fastest way to create a checksum for large files in C#
I have to sync large files across some machines. The files can be up to 6GB in size. The sync will be done manually every few weeks. I cant take the filename into consideration because they can change anytime.
...
Inheritance and Overriding __init__ in python
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
git使用代理服务器，提升git速度 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...g --global http proxy & 39;socks5: 127 0 0 1:1080& 39;git config --global https proxy & 39;socks5: 127 0 0 1:1080& 39;更详细的设置 快捷设置sss代理：
git config --global http.proxy 'socks5://127.0.0.1:1080'
git config --global https.proxy 'socks5://127.0.0.1:1080'
更详细...
APP被手机识别为疑似病毒 - App应用开发 - 清泛IT社区，为创新赋能！
...中关闭它。
2、如果想要发布，可以先线上检测一下：https://m.qq.com/security_lab/scans_online.jsp
上传APK文件检测。如果显示为“未知软件”，则说明手机管家还未标记这个APK，必须强行触发规则，让其显示为风险应用。打开QQ邮箱...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Can you use if/else conditions in CSS?
... use classes for this, if you have access to the HTML. Consider this:
<p class="normal">Text</p>
<p class="active">Text</p>
and in your CSS file:
p.normal {
background-position : 150px 8px;
}
p.active {
background-position : 4px 8px;
}
That's the CSS way to do it.
...
Storing Image Data for offline web application (client-side storage database)
...nt with XHR2-Lib by Phil Parsons, which is very much like JQUERY .ajax()
https://github.com/p-m-p/xhr2-lib
Storage
IndexedDB for IE and FireFox
Chrome: Polyfill (blob stored using FileSystem API, reference kept in IndexedDB) polyfill
A Must read article on "How the browsers store IndexedDB d...