Programming VIP

Preface I often encounter such a problem. When preloading the image resources of h5 project, we often need to manually get one image address and store it in the array, and then pre load the traversal, such as this: let imgList = ['http://domain.com/img/1.jpg','http://domain.com/img/2.jpg','http://domain.com/img/3.jpg',...]; In the spirit of bei ...

sentry installation:https://github.com/getsentry/onpremiseUse the installation steps of this document correctly to install version 9.1.1-onbuild, which requires self modifying the Dockerfile.   Note: the command to build the database will not be executed all at once, and needs to be run multiple times: docker-compose run --rm web upgrade   ...

Demand background Generally speaking, text thinning is used for map related requirements. I also implemented this method when I implemented a function for the company's map engine. Here, I simplified it and operated it on the ordinary Canvas without introducing the concept of map Effect collision detection Calculate the range of text in canvas ...

Life is short, I choose Python Previous portal Little white learning Python (1): the beginning Little white learning Python (2): basic data types (I) Python (3): basic data type (2) Python (4): basic operation of variables Python (5): basic operators (1) Python (6): basic operator (2) Xiao Bai Xue Python (7): basic process control (Part one) P ...

The nginx echo module allows users to directly output strings in nginx, which is convenient for users to debug when configuring nginx. Document address: https://www.nginx.com/resources/wiki/modules/echo/ , github address: https://github.com/openresty/echo-nginx-module 1, installation Here, take nginx version: nginx/1.10.3 (Ubuntu) of ubuntu ...

1. Polymorphic grammar 1. If there is no inheritance relationship between two classes, polymorphism cannot be used for compilation. 2. No matter upward or upward transformation, inheritance is needed. 3. When is the downward transformation needed? When the called method or property is specific to a subtype and does not exist in the parent t ...

Java threads have six states since jdk1.5. NEW: a thread that has not been started is in this state. RUNNABLE: the thread executing in the Java virtual machine is in this state. BLOCKED: the thread waiting for the monitor lock to be BLOCKED is in this state. WAITING: a thread that waits indefinitely for another thr ...

Code download address: https://github.com/tazhigang/big-data-github.git I. preliminary preparation Since this case is optimized on the basis of case 6, please refer to case 6 for requirements and data input and output; for the first time, you need to copy the pd.txt file in the root directory of the J disk of the local computer for reference. ...

Since we want to integrate, the first step is to find the source and download it directly to the official website. Official website address: https://pandao.github.io/editor.md/ Extract the download file after downloading If the dependency used is basically marked with a red box, drop the required dependency into the resources directory of your ...

By valentinogagliardiTranslator: front-end witSource: github Alibaba cloud server is very cheap and popular. This year, it is cheaper than last year. From October 24 to November 11, the purchase cost is 86 yuan in one year and 229 yuan in three years. You can click the following link to participate:https://www.aliyun.com/1111/2... In order to ...