Using nsq to generate pdf service with puppeter under node (eggjs)

This article mainly introduces how to use nsq in nodeJs, and other implementations will be output in subsequent articles. cause Some time ago, I made a node service to generate pdf from web pages. In the process of generating puppeter and canvas, the consumption of memory is relatively large, the generation time of pages with large internal cap ...

Posted on Thu, 18 Jun 2020 05:38:47 -0400 by John Canyon

Simple intelligent home central control system based on Wio Terminal (initial version)

After continuous learning, the early generation of simple smart home central control system has been completed, and the functions filled in when applying for the project have been completed, but some functions are not implemented with Wio Terminal (on the one hand, because the code volume is too large, ...

Posted on Thu, 18 Jun 2020 03:12:19 -0400 by paparts

Qt Open Source Works 35-Key Generator

1. Preface In many commercial software, you need to provide some versions that can be run on trial, so you need a matching key mechanism to control. Throughout most trial software, you basically use the following mechanisms to control. Remote networking activation, networking every time you start to view the usage time, etc. This method is the ...

Posted on Wed, 17 Jun 2020 21:01:39 -0400 by assonitis

Please don't write a full screen try catch anymore!

background During the software development process, it is inevitable to handle all kinds of exceptions. For me, at least half of the time is spent dealing with all kinds of exceptions, so there will be a lot of try {...} catch {...} finally {...} code blocks in the code, which not only has a lot of redundant code, but also affects the readabil ...

Posted on Wed, 17 Jun 2020 18:14:51 -0400 by elite_prodigy

java Network Programming Reality - BIO-based pseudo-asynchronous, high concurrency, full duplex, long connection continuous message IO network programming

Preface TCP is a connection-oriented communication protocol through Three-time handshake Set up a connection and remove the connection when the communication is complete. Since TCP is connection-oriented, it can only be used for end-to-end communication. TCP provides a reliable data stream Service, which uses "affirmative acknowledgement ...

Posted on Wed, 17 Jun 2020 16:12:09 -0400 by gurjit

Numerical analysis case: Newton interpolation forecast 2019 urban (Asian) temperature, Crout solution to urban isothermal factor coefficient

Numerical analysis case: Newton interpolation forecast 2019 urban (Asian) temperature, Crout solution to urban isothermal factor coefficient Article catalog Numerical analysis case: Newton interpolation forecast 2019 urban (Asian) temperature, Crout solution to urban isothermal factor coefficient ...

Posted on Wed, 17 Jun 2020 02:59:31 -0400 by emceej

Notes on "from introduction to mastery of embedded system in maker College" -- 10 comprehensive mastery of embedded system transplantation

  catalog   01 basic concept of embedded, building of embedded development environment, building of target machine, building of TFTP service, building of NFS service 1. System migration overview and environment construction 1. General embedded system software components 2. Conditions and prospe ...

Posted on Wed, 17 Jun 2020 01:19:12 -0400 by hessodreamy

Converting Excel tables to visual graphics in Python

As you know, a large part of postgraduate entrance examination is also the ability to collect information. Every year, many people fail to correctly analyze the admission information of each university in the past years, and then fail to choose the right college. As for the enrollment information of many colleges and universities, it is publish ...

Posted on Tue, 16 Jun 2020 23:37:48 -0400 by cybtec

Graphviz installation and introduction under windows

Download installation configuration environment variable intall Configure environment variables verification Introduction to basic drawing graph digraph A complex example Interact with python Finding good tools is like finding a new continent. Sometimes, we will be curious about how to make ...

Posted on Tue, 16 Jun 2020 22:40:56 -0400 by kellydigital

Snake Eager Game (printf output C version)

This time, we use printf output to implement a classic little game - Snake Eater. The main difficulties are how snake data is stored, how to achieve the effect of turning, how to increase the length after eating food. 1 Construct Snake First, display a small still snake in the picture.The corresponding element of the two-dimensional array ca ...

Posted on Tue, 16 Jun 2020 20:25:04 -0400 by mentalist