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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...存映射文件,所以必须使用64位版本。官方下载地址如下：http: www mongodb org downloads实验环境使用的Mongodb版本为mon 因为MongoDB使用内存映射文件,所以必须使用64位版本。
官方下载地址如下：http://www.mongodb.org/downloads
实验环境使...
How can I remove an element from a list?
...
I don't know R at all, but a bit of creative googling led me here: http://tolstoy.newcastle.edu.au/R/help/05/04/1919.html
The key quote from there:
I do not find explicit documentation for R on how to remove elements from lists, but trial and error tells me
myList[[5]] <- NULL
...
What guidelines for HTML email design are there? [closed]
...a URL in the link text - you will anger 'phishing' filters (eg <a href="http://domain.tld">www.someotherdomain.tld</a> is bad)
Remember that the "fold" on webmail clients tends to be extremely high up the page (on a 1024x768 screen, most interfaces won't show more than a hundred pixels o...
How to open a new tab using Selenium WebDriver?
...selenium-webdriver'
driver = Selenium::WebDriver.for :firefox
driver.get('http://stackoverflow.com/')
body = driver.find_element(:tag_name => 'body')
body.send_keys(:control, 't')
driver.quit
Python
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = web...
How is the undo tree used in Vim?
...igured I'd mention that I wrote an undo tree visualization plugin for Vim: http://bitbucket.org/sjl/gundo.vim/
Personally I found that graphing the tree like this was the only way I could make sense of it.
share
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...
What is the difference between user and kernel modes in operating systems?
...CPU, performs its operations, restore the state and returns to user mode.
http://en.wikibooks.org/wiki/Windows_Programming/User_Mode_vs_Kernel_Mode
http://tldp.org/HOWTO/KernelAnalysis-HOWTO-3.html
http://en.wikipedia.org/wiki/Direct_memory_access
http://en.wikipedia.org/wiki/Interrupt_request
...
What causes imported Maven project in Eclipse to use Java 1.5 instead of Java 1.6 by default and how
...
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/xsd/maven-4.0.0.xs...
JSONP with ASP.NET Web API
...d to go with an JQuery AJAX call that looks like this:
$.ajax({
url: 'http://myurl.com',
type: 'GET',
dataType: 'jsonp',
success: function (data) {
alert(data.MyProperty);
}
})
It seems to work very well.
...
How to get parameters from the URL with JSP
...ng (the data following the question mark on the URL). For example, the URL http://hostname.com?p1=v1&p2=v2 contains two request parameters - - p1 and p2. In a POST request, the request parameters are taken from both query string and the posted data which is encoded in the body of the request.
T...
How to use ScrollView in Android?
...ust make the top-level layout a ScrollView:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true">
<TableLayout
android:layout_width="match_parent"...