fitbit versus

Fitbit upcoming IPO, this is a smart wearable company, the main products for health testing equipment, smart bracelet, smart watch. Let's take a look at some of Fitbit's data. According to its prospectus, Fitbit sold 10.9 million wearable devices in 2014, more than twice times in 2013. As of the first quarter of 2015, Fitbit sold 20.8 million devices from its inc

Editor's note: This article from Tomasz Tunguz, the Chinese version by Heaven Zhuhai Branch Rudder compiled. If you are concerned about these days of overseas industry news, you should be not unfamiliar with the news that Fitbit is listed on the Nasdaq and become another "unicorn"-level start-up company. We have previously written about how the GoPro's income growth rate is unbelievable. And now it seems that

Objective: To import the Fitbit daily Movement records into the R language for analysis and to draw a statistical chart toOriginal data: fitbit2014 Daily Record spreadsheet file, examples are as follows: Date Calories burned Step Distance Number of floors climbed A sedentary number of minutes Less active minutes Moderate active minutes Very active minutes

Reprinted: http://bunnyamqp.wordpress.com/2009/08/21/amqp-basic-publish-immediate-versus-mandatory/ I was unclear about the difference between the mandatory and immediate options for the amqpBasic. PublishMethod, so I did a little investigation with Bunny and rabbitmq. It turns out that the difference is pretty straightforward. If you publish a message with: MandatoryOption Set to true like so- my_exchange.publish('Test message', :mandatory => true)

capturing versus non-capturing lambdasLambdas is said to being "capturing" if they access a non-static variable or object that is defined outside of the lambda b Ody. For example, this lambda captures the Variablex:int x = 5; return y x + y;In order for this lambda declaration to is valid, the variables it captures must be "effectively final". So, either they must is marked with thefinalmodifier, or they must not being modified after they ' re assigne

Row versus set processing, surprise!Craig shallahamer: 1. set Based processing will likely be much faster than row based processing. our experiment of processing 100 k rows showed row based processing was 3700 times slower than set based processing. not twice as slower or even 10 times slower... 3700 times slower! (The difference is 3700 times) 2. compared to set based processing, row based processing times degrade much quicker than set ba

From:http://odetocode.com/blogs/scott/archive/2011/01/17/http-modules-versus-asp-net-mvc-action-filters.aspxMonday, January 17, 2011The ASP. NET MVC has the action filters, while the ASP. HTTP modules. Inside their respective processing pipelines, these abstractions serve similar purposes, and I ' ve heard the following ques tion a few times:When should I write a HTTP module and when should I write an action filter? If You is creating an MVC applicati

Developer productivity:skilled Versus AverageNeal Ford Atlanta, Georgia, U.S.Let's debunk SoME of the MyThS about developer Skills for Project Man-agers who has been assigned for the first time to Software projects. Under-stand that really good software developers is much more productive than average ones. In fact, some statistics say that really good developers is mul-tiple orders of magnitude better than poor ones. One order of magnitude is the same

Last month, I discussed Google's XSS Vulnerability and provided an example that demonstrates it. I was hoping to highlight why character encoding consistency is important, but apparently the addslashes () versus mysql_real_escape_string () debate continues. demonstrating Google's XSS vulnerability is pretty easy. demonstrating an SQL injection attack that is immune to addslashes () is a bit more involved, but still pretty straightforward.In GBK, 0xbf2

Implementing Runnable Versus Extending ThreadRather than inherit from Thread, a class can implement the interface java. lang. runnable to allow a thread to be run within it. runnable specifies that only one method be implemented: public void run () This is the same method signature that run () has in Thread. in fact, Thread also implements Runnable! Note that run () does not take any parameters, does not return anything, and does not declare that it t

Cocos2d-x 2.x versus 3.x, cocos2d-x2.x Common class name changes in Cocos2d-x In the following table, the class name is converted to delete the CC prefix directly. Cocos2d-x class name change The conversion of class names in the following table is relatively large. CCString usage change Before: 1 CCString*str=CCString::createWithFormat("%s.png","picture"); Now: 1 std::stringstr=StringUtils::format("%s.png","picture");

P1: I am learning about 'refactoring to patters' and have JoshuaKerievsky's book. A colleague and I are debating the relative meritsThe so-called table-driven design approach versus gof-centric designPattern approach: as a rule, do/shoshould one (or more) gof patternsSupplant table driven designs? If so, how shocould such a refactoringProceed? Any thoughts on this are appreciated. Sam P2:As I understand it Table driven design is about Data Modeli

1. Blocking calls (after reading the file and performing subsequent operations)var fs = require ("FS");var data = Fs.readfilesync ('/fs.txt ');Console.log (Data.tostring ());Console.log ("program execution ends!");Output Result:"File Contents""Program execution is over!" ”2. non-blocking calls (synchronous execution of read files and other operations)var fs = require ("FS"); Fs.readfile ('/fs.txt ', function (err,data) {if (err) return Console.error (ERR);Console.log (Data.tostring ());});Consol

) is used for the client generation for a WCF service, while WSDL. EXE tool is used for generating the same for a Web service. Exception handling -in WCF, unhandled exceptions is handled in a better the by making use of faultcontract. They does not return to the client as a Web service as SOAP faults. Has 1. Attributes: WCF services are defined by service contracts and operational contracts, whereas Web services are defined by the WebService and WebMethod properties2. Protocol: WCF supports

exceeds 0 subscript, the number of bits moved will be many, the following is my method,//No cyclic movement, but compared to b[0], if smaller than b[0], in comparison Len (i) with Len (J), if the left side is greater than the right, I will insert it to the right. The reverse is similar. #include using namespace STD;//2 Road Insert sort.voidGrial (intA[],intN) {intIintJintB[n];//New space for sorting.b[0]=a[0]; I=1; j=n-1;intK for(k=1; kintFlag = i> (n-j)?1:-1;//Compare the left length with the

Frontpage|interdev|visual Visual InterDev 6.0 versus FrontPage 2000:your Choice Alexander Maltsev Visual InterDev 6.0 and FrontPage are two tools used by WEB professionals, but they offer complementary functions. The best one to choose depends on the task for you ' re tackling. Many people clearly understand difference between visual Interdev®and microsoft®frontpage®: Visual InterDev is part of Visual studio®, hence a developer ' s tool; FrontPage

type, The overhead of the data is the largest. One way to reduce space usage is to take the field names as short as possible, so that space is small, but this requires a tradeoff between legibility and space occupancy. I have suggested that the author put the field name index, each of the field names in one byte, so you don't have to worry about how long the field name takes. But the author's concern is not unreasonable, this index method needs to be a result of each query to replace the index

Article directory:JavaScript Objects and PHP arrays　　 PHP array parsed into JSON format string$arr=array( ' file ' == Array (' Open ', ' close '), ' help ' = =array(' About the procedure '); echo json_encode ($arr);Output　　{"\u6587\u4ef6": ["\u6253\u5f00", "\u5173\u95ed"], "\u5e2e\u52a9": ["\u5173\u4e8e\u672c\u7a0b\u5e8f"]}The {} In JS represents an object.JS [] represents an array.= = corresponds to:There are several ways to traverse JSON:　　 var meau={ ' file ': [' open

Source: http://stackoverflow.com/questions/1434937/namespace-functions-versus-static-methods-on-a-class By default, use namespaced functions. Classes are to build objects, not to replace namespaces.In Object Oriented code Scott Meyers wrote a whole Item for his valid tive C ++ book on this topic, "Prefer non-member non-friend functions to member functions ". I found an online reference to this principle in an article from Herb Suter: http://www.gotw.

called "garbage Collector", as the name implies is the garbage collector, then only the object called garbage can be recycled by GC. That is, the memory used by a reference type object needs to be reclaimed by GC and needs to be garbage first. So. NET how to determine a reference type object is garbage,. NET's judgment is simple, as long as the object or its contained sub-object is determined that no reference is valid, then the system considers it to be garbage.With these two basic concepts in