the 28,000 MHz (GHz) band, compared to the current fourth generation long-term evolution (4G LTE) service with a rate of only 75Mbps. The previous transmission bottleneck was widely considered a technical problem in the industry, while Samsung Electronics used 64 antenna Units Adaptive array transmission technology to solve the problem.
The future 5G network transmission rate of up to 10Gbps, which means that mobile phone users in less than a second
the field you want to display does not have the store property set so the default is false and the field will not be displayed if False#stored_fields设置搜索结果只显示哪些字段GET jobbole/job/_search{ "stored_fields": ["title", "Company_Name"], "query": { "Multi_match": { "query": "Search Engine", "Fields": ["title^3", "desc" ] }}Sorting by sort search resultsNote: The sorted field must be a number or a dateDesc AscendingASC Descending#通过sort搜索结果排序 # Note: The sorted field must be a numbe
the data from the last index, sequentially traversal can get the desired results.
The sort direction is not important, and MongoDB can traverse the index in any direction.On the other hand, compound index is very efficient in point query, it is not necessary to sort the result and return the result.
Multi-valued query (Multi-value-query)
Db.users.find ({' age ': {"$gte": "$lte": 30}})
Find documents that match multiple values. Multipl
mongocursor
while (Cursor.hasnext ())
Log.debug (Cursor.next (). Tojson ());
Query all documents and use blocking callback method for all results
Blogs.find (). ForEach (block
Log.debug (Document.tojson ());
});
Query all documents, Get Title field (string), likes field (Int32), tags field (array) in the resulting document
Blogs.find (). ForEach (block
String title = document.getstring ("title");
int likes = Document.getinteger ("likes");
list
Log.debug (title + "-" + Likes + "
calls.
.
These use cases show that videos are not used for two-way conversations, but for unilateral real-time video communication. Generally, one party wants to see the other side of the conversation.
Medical care is an important field. One Party on the move needs the advice of experts, and more applications are available for mobile video calls. This is a unique feature of the video call system.What will happen in the future?
We have the available mobile video call function, which has both
coffee shop or a large department store, the owner only wants a login page, so I think there will be only one Wi-Fi solution for each venue ."
Baker said operators that want to occupy part of the Wi-Fi market are scrambling to catch up. "But they encountered obstacles because they started from scratch. The Cloud and O2, our closest competitors, already have about 15 thousand Wi-Fi hotspots, And we have 4.5 million (including Fon access points ). In the past two or three years, we have significa
IE conditional comment how to playIf you have played with conditional annotations, you can omit the following introductory remarks.IE Conditional comment (Conditional comments) is the private code of IE browser, is a syntax comment block similar to if judgment, supported on IE5.That's what the code looks like.!--[If IE 6]>You are using IE6! [endif]--> Copy CodeHis syntax is an ordinary HTML comment!–comments–> the branch block starts with the [if condition (conditional)]>! [endif] End. Condition
false), mixed use is not accepted.
FindOne () and find () are basically the same, but findONe () returns only the first piece of data no matter how many documents meet the query conditions. The syntax and usage of findOne () are the same as that of find.4.2.1 query Selector
If mongodb only provides the query method described above, the powerful query function of mongodb is too well-known. Next we will learn the powerful query selector of mongodb.
In the document of mongodb, it is divided into c
mailbox, which is used to upload a local repository to GitHub and display code uploader on GitHub;Use the command:git config--global user.email "registered mailbox"//Set up a mailboxThe GIT client has been installed and the GitHub configuration is complete, and now the code can be transferred from GitHub.Uploading filesFirst, login to the Gitlab homepage to create a new projectTaking the lte/lte-powerpc.gi
function Getqos_one ($ethnumber) {$qos = new Qosclass (); $file = "/usr/local/lte/em100cfg". $ethnumber; echo $file; $ Content=file_get_contents ($file); $list =explode ("\ n", $content), $qosarry =array (); for ($i =1; $i
Why is the value gone after the unshift? or is the value of the fourth replaced by the previous number of values?
Reply to discussion (solution)
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. Smartphones and tablets will perform many functions, including remote controls, displaying and analyzing information, and monitoring with social networks the "things" that can tweet or post, paying subscription fees, ordering replacement supplies, and updating object firmware.9. Measurement and Monitoring toolsThe diversity of mobile devices makes it impossible to test a full range of applications. The nature of mobile network uncertainties and cloud services that support mobile networks can c
The game project has a dedicated interface and query page for collecting iOS crashes, and the operations/testing colleagues sometimes look at the daily crashes through a query page, often asking what iphone6,1 is, and what is iphone7,1? I searched the internet carefully, the most complete is from Wikipedia: List of IOS devices One of the hardware strings is now the most complete, and the first digit on the back of the iphone represents the iphone, such as the 7 above, which represents the 7th-g
According to the data provided by Apple's Hong Kong official website, the Hong Kong iPhone 6 has two models: A1549 and A1586. Among them, A1549 is divided into GSM and CDMA version, GSM version supports GSM/EDGE/WCDMA/FDD-LTE standard, the CDMA version supports GSM/EDGE/CDMA EV-DO/WCMDA/lte fdd standard. While A1586 and the domestic version of the network standard, support GSM/EDGE/TD-SCDMA/WCDMA/CDMA E
trading on mobile devices, they would no longer want to buy other products from the company through other channels. ^10 in other words, poor mobile page performance can affect the sales of various other platforms in the company, including, of course, offline physical stores.Mobile traffic is growing rapidly. For many consumers, their mobile phones or tablet devices have become the main gateway to their web browsing, but their performance is not satisfactory. In February 2011, a study commission
At present, Huawei P7 Unicom 4G version and mobile 4G version has got the network license, their models are p7-l00 and P7-L05 respectively. The former supports the TD-LTE/WCDMA/GSM network, and has dual SIM card function, while the latter supports the TD-LTE/TD-SCDMA/GSM network, but does not have dual-sim double function.
Huawei P7 is the flagship of Huawei this year after Mate7, similar to the relationsh
The date format for data records in MongoDB is"DateCreated":isodate ("2011-12-20t07:22:50.836z")After flipping through the MongoDB section of the PHP website, it's important to use the following key statements to manipulate the dates in MongoDB:$start = new Mongodate (Strtotime ('-1 day '));$end = new Mongodate (time ());$resultObject =$db->user->find ("dateCreated" = = Array (' $gt ' = = $start, ' $lte ' + $end) ));"NOTE: SELECT * from users WHERE ag
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