antv X6 Cell parent-child node problem

sParentOf(...) isParentOf(child: Cell | null): boolean Returns whether the current node is the parent node of the specified Cell. parameter nametypeMandatory Default valuedescribechildCell | null✓ isChildOf(...) isChildOf(parent: Cell | null): boolean Returns whether the current node / edge is a child node / edge of the specified node. p ...

Posted by 2tonejoe on Wed, 25 May 2022 05:35:03 +0300

wemos D1 arduino IoT Development Board Application Note 5 - Scan Hotspots

foreword In this section, we learn to use the WIFI Scan function of WeMos D1, and write two instances to implement synchronous scanning and asynchronous scanning respectively. The so-called synchronous scanning means that after calling the scanning function, the program will block until the scanning ends, and directly call WiFi.scanComplete() Y ...

Posted by sissy on Wed, 25 May 2022 05:01:12 +0300

Front end programmer Mac ultrafast installation guide

preface Recently, the company's computer has been upgraded. The company has equipped a 16 inch New mbp. After the original 15 inch mbp is purchased, all the hard disks are cleaned and used by myself, which means that I have to install the computer twice. The installation of the programmer's computer means that a large number of configurations, ...

Posted by helz on Wed, 25 May 2022 04:51:56 +0300

Rust leetcode elementary algorithm string code summary

strrev The easiest solution! s.reverse(); Of course, you can write it yourself! let len = s.len(); let mut t: char; for i in 0..len / 2 { t = s[i]; s[i] = s[len - i - 1]; s[len - i - 1] = t; } Integer inversion, if leet writes STD before I32 e.g. std::i32::MAX, official recommendation direct I32 if x > i32::MAX - 1 || x < i ...

Posted by FoTo50 on Wed, 25 May 2022 04:51:23 +0300

Visualization of time series data using calendar heat map

I believe many people will see such a heat map in GitHub, which records the daily contribution of GitHub platform. Time series data sampled in days in the heat map of each calendar year. GitHub's contribution graph shows the number of contributions made by users in the past few years. The color block represents the amount of contribution, as sh ...

Posted by airdee on Wed, 25 May 2022 04:47:58 +0300

How to use rem or viewport for mobile adaptation?

 When developing a mobile interface, mobile adaptation has always been a headache. Common mobile adaptations include viewport adaptation, rem adaptation, percentage adaptation, etc. Here we only introduce viewport adaptation and rem adaptation. adaptation. After reading this article, I believe that you should be able to actually operate the mob ...

Posted by schme16 on Wed, 25 May 2022 04:28:32 +0300

Source code compilation and installation httpd-2.4.43

Source code compilation and installation httpd-2.4.43 abstract Installation environment Software download Installation and testing 1) Download the source code of APR, APR util, PCRE and httpd 2) Unzip and install apr 3) Unzip and install APR util 4) Unzip and install pcre 5) Unzip and install httpd 6) Configuration files and c ...

Posted by dgreenhouse on Wed, 25 May 2022 04:18:37 +0300

Construction of Zookeeper in windows

download [external chain picture transfer failed. The source station may have anti-theft chain mechanism. It is recommended to save the picture and upload it directly Download address: https://mirrors.cnnic.cn/apache/zookeeper/ PS: zookeeper package with bin ID from version 3.5.5 or later, otherwise an error will be reported when starting: &q ...

Posted by mouse02 on Wed, 25 May 2022 04:12:15 +0300

Data structure -- complete version of binary search tree (C + +)

When we search for an integer among n dynamic integers, there are several methods ① Using dynamic arrays, the average time complexity is O(n) ② Using an ordered dynamic array and binary search method, although its worst time complexity is only O(logn), its average time complexity of addition and depth is too high, which is O(n). ③ Using a link ...

Posted by nonexist on Wed, 25 May 2022 04:01:05 +0300

Best practices for deploying various Beat s of the Elastic Stack under Tencent Cloud

Overview Using the various Beats modules of the Elastic Stack can completely end the twisted practice of manually collecting logs and checking metrics on the server. With the Elasticsearch service provided by Tencent Cloud, the operation and maintenance of a large-scale cloud environment can be easily done. This article helps you sort out the ...

Posted by brauchi on Wed, 25 May 2022 03:37:30 +0300