hackathon prizes

The entire first half of the operating activities in the design, basically every month will do three to four, there are lottery, ranking, and so on. The time of each activity design is limited, how to do something interesting under the condition of ensuring efficiency? Here are some of the activities I have done design, do not dare to say that each is doing well, But at least every activity will have some of its own want to send in. The interaction of the product was almost the same, even the

intervals, and the above stored procedure is the use of the form of the cursor to take the beginning of the end of each interval, and the value of this interval is to the system to cache this interval value, In this way, when the large data volume gift can only save the beginning of each interval of the value can be, the system in the actual awards do not need to be in the database to query the table of available prizes, because such a high concurren

allow you to adapt to the next tool and market. Whether you are contributing to an open source project or working on a company project, we are able to acquire technical skills and trust.Another benefit of developing software is that it "forces" you to find ways to solve problems. We cannot leave the difficult things to others, so we must not ask for help too soon.It is worth mentioning that: Do not select only projects that have no challenges. We also need to fail! Although you may not want to

are using the latest dev version, or a stable version. If you have a problem, go to the gitter chat room of the etheric Square project or forums.ethereum.org and ask the other person what version they are using. Web3.js API. Once the solidity contract has been compiled and sent to the network, you can use the Web3.js JavaScript API in the etheric square to invoke it to build Web applications that interact with it. These are the basic tools needed to write intelligent contracts and build dapp th

sent to the network, you can use the Ethereum web3.js JavaScript API to invoke it and build a Web application that interacts with it. These are the basic tools needed to write smart contracts on Ethereum and build dapp that interact with them. The second part. Dapp framework, tools and workflow DAPP Development Framework Although the tools mentioned above can be developed, the use of the framework created by the Community gods makes development easier. Truffle and Embark. It was truffle that le

[' addon '] = ' Scratch ';//Assign Value the $prizes= M (' Prize ')->where ($map)->select ();//Check Table the $this->assign (' prizes ',$prizes);//Pass value to template display94 the //Lottery record the $all _prizes= M (' Sn_code ')->where ($map)->order (' id desc ')Select (); the //dump ($all _prizes);98 foreac

4. Cheer up the company's morale with carrot games Liu Bei quickly absorbed the nutrition of various carrots and made new innovations. He designed a super carrot game that combines the fruits of carrots. Without any cost, his work became interesting, make employees enjoy high morale. The game is played in this way: Step 1: display various exciting carrots to employees based on different grades. Step 2: When an employee performs well at work, the employee can earn an honor point after being nomin

Create or replace procedure merge (v_phone_number in varchar2, v_tone_id in varchar2, v_tone_code in varchar2, v_tone_name in varchar2, v_tone_type in number, v_num out varchar2, -- serial number v_iswin out number, -- whether to win 0 not yet, 1 wins v_gift out number, and so on.) Is v_this_month varchar2 (20); -- v_black_count number this month; -- whether or not v_gift_rate1 number is in the blacklist; -- number of first prizes v_gift_rate2 number;

Then we will certainly design the algorithm in the program, that is, in accordance with a certain probability for users to receive prizes. Let's take a look at two probability algorithm functions. Algorithm OneCopy the Code code as follows:/*** Full probability calculation** @param array $p Array (' A ' =>0.5, ' B ' =>0.2, ' C ' =>0.4)* @return String returns the key of the above array*/function Random ($ps) {Static $arr = Array ();$key = MD5 (serial

Lottery winning event is a random event, with a large number of manual tests to check the correctness of the probability of winning is obviously not advisable, in addition to the winning process manually, the subsequent processing of the check, you can and development cooperation, using the interface to test whether the probability of winning matches the expected design requirements. This article to share is the use of PHP according to the weight of the prize to achieve probabilistic random draw

Hello everyone, I am doing the development. As the question: in the sweep code when live Click button Redemption, how to avoid multiple prizes. 2 Types of offline activities: 1 sweep QR code 2 Click the Claim button. There was no problem at the time of the test (small company, just a few people testing).This is caused by a user network problem, a program vulnerability, or a logical problem ....Because there are 1 users with 9 timestamps of the same

probability of winning a tablet is one in ten. Each request on the front-end page sets an array of PHP loop awards. the probability calculation function get_rand is used to obtain the prize id. Save the prize to the array $ res ['yes'], and save the remaining unwon information in $ res ['no, finally, the number of json data is output to the front-end page. The code is as follows: // If the winning data is stored in the database, you need to determine the number of winners.// For medium 1, 2,

The romantic Tanabata is coming up,Except Su-eun love.There's something more fun to do.Give me a chestnut: Login to Job.oschina.net, participate in Sweepstakes Again to improve the resume, and then to draw the award!! By the way, for a high-paying job, 11 travel expenses do not worry. Invite friends to complete the resume, and then smoke again!!! Nani, this is to LUN home will be mechanical keyboard, limited edition t-shirts are all hug home ah. Sweet potato Sorghum said, this time

[Activity time]10Month18Daily --10Month25Day24Point [Activity object]All members of Wenqi ladder [Activity Rules] 1. use images and buildings, images can be your desktop, it can be a variety of interesting " 7 " Images , describe the reason for uploading the image in one sentence. 2. the number of participants and the number of desktops to be uploaded are not limited, but only 1 prize, subject to the first gift. (lucky prizes