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Translator Press: OReilly recently a booklet "What is Node?", a brief explanation of Node's life and the application of the scene, the author easy and smooth, full content, is very rare learning materials. Translate it out and share it with us ~ Full text: http://jayli.github.com/whatisnode/index.htmlAuthor: Brett McLaughlin, Original:

Label:I used to want to know what the difference was, but it was forgotten because we seldom used a unique key constraint. It was not until a few days ago that my colleague gave me a script to constrain the uniqueness of a field with a unique key constraint. There seems to be a difference, and no big difference found! Actually, it's not much different, just test it out. Use [Demodb] GO CREATE TABLE [dbo].[ Tableuniquekey] (

attribute is prohibited. Such as: Wrong code: The correct code: List A table to let you know: HTML XHTML Compact compact= "compact" Checked checked= "Checked" DECLARE declare= "DECLARE" ReadOnly readonly= "ReadOnly" Disabled disabled= "Disabled" Selected Selected= "Selected" Defer defer= "defer" Ismap ismap= "Ismap" Nohref nohref= "Nohref" NoShade noshade= "NoShade" nowrap nowrap= "NoWrap" Multiple multiple= "multiple" Noresize noresize= "Noresize"

stateless because the salary is not dependent on other resources or state, and in this case, the employee's salary is a resource, and the corresponding URL can be used to get the resource through the Getting method in HTTP, This is the typical restful style. Said so much, exactly what restful look like. Get:http://ww

convertView, ViewGroup parent) {ViewHolder viewHolder = null;if (convertView == null) {convertView = getLayoutInflater().inflate(R.layout.item,parent, false);viewHolder = new ViewHolder();viewHolder.tv = (TextView) convertView.findViewById(R.id.tv);convertView.setTag(viewHolder);} else {viewHolder = (ViewHolder) convertView.getTag();}viewHolder.tv.setText("item" + position);Log.d("TAG", "position=" + position + "---" + viewHolder.toString());return convertView;}}private class ViewHolder {//pri

What is hibernate lazy loading? When should I load it with laziness? Why should I load it with laziness ?, Hibernate Lazy is called delayed loading and delayed loading. When should I load it with laziness? I can only answer the question: When should I load it with laziness. Why should we use lazy loading? When the amount of data we want to access

on a very long name-tessellation! There have been a lot of battles. In fact, few common users know what this is and what it does. This term is widely accepted. Chinese translation is called "surface subdivision" and is often refe

experience.Unfortunately, I didn't find a teacher who taught me how to fix the hard disk, and I don't think that this textbook is too helpful for me to repair the hard disk.Several Basic concepts that hard drive repair personnel need to understandSome basic concepts will be involved in hard disk repair and repair using professional software. Here, based on his own research and practical experience, Gao Peng tries to summarize and explain some concept

,proxy, the default is lazy= "proxy".The specifics of what to look for depends on your needs, not which settings are the best.If you include a Head object in a student objectIf you are sure that you want to use the student object with the properties of the head object, then you set the load immediately, because the settings are loaded immediately then query student at the same time will query student head,

Mobile phone fingerprint recognition is from which year began to remember, but its convenience is more and more popular. But the problem is, for today's iphone users, must have encountered the problem of fingerprint identification failure. What should I do if I encounter a situation where the fingerprint

What will happen if this code is wrong? The first is true. The second type is incorrect. if there is no bean number between fields, what will happen if we follow the second method? First: { nbsp; $ r$ empire- gt; fetch1 ( quot; se

In the past two days, because of 315, cookies have suddenly become very popular. It is said that many netizens are busy deleting cookies in their browsers. At first, I was bored. CCTV didn't know what to say. Two days ago, a relative at home told me, "You all know what we used to do online and read our emails. This is

oriented. The qualitative difference lies in OO's proposed Inheritance. Therefore, objects that are not inherited can only be called object-based. Only inheritance can be called object-oriented.The above are some of the messages I have seen on other websites. They are not continuous and may be messy. But let's look at what others are saying first.Which of the following is our opinion?[Em07]

What is the difference between URL Routing in ASP. NET and URL Rewriting in IIS? routingrewriting Preface The previous two posts mentioned the features of URL Routing, but many people have found that URL Routing is URl Rewriting, in fact, although both of them provide similar functions (improving friendly URLs to facilitate search and indexing), the principle and