Tag: slots

The use of slot slots in Vue3

Using slots in Vue3 When are slots used? In vue, when we want to use subcomponents, we need to pass some specific templates to the subcomponents. At this time, you need to use slots. Slots are of great use in some encapsulated components. Slots include anonymous slots, fallback content, named slots, and scope slots. Let’s […]

Several advanced ways to play signals and slots in PyQt 5

The editor said: Signal and Slot are the core mechanisms in Qt and are also the mechanisms for communication between objects in PyQt programming. This article introduces several levels of PyQt 5 signals and slots. This article is selected from the book “PyQt5 Rapid Development and Practical Combat”. In Qt, every QObject object and all […]

Qt meta-object system, signals and slots, and events

Article directory meta-object system Basic concepts of meta-object system Meta-object system and reflection mechanism qobject_cast function Use reflection mechanism to obtain information about member functions of class objects QMetaMethon class QMetaObject class attribute system Signals and Slots Event delivery (or distribution) and processing Acceptance and Ignore of Events event filter Custom events and event sending […]

VUE3 follows the script – built-in instructions and custom instructions and slots

VUE3 follows the script – built-in instructions and custom instructions and slots VUE3 scripted series navigation Preface 1. Built-in instructions 1.v-text 2.v-html 3.v-show 4.v-if 5.v-else 6.v-else-if 7.v-for 8.v-on 9.v-bind 10.v-model 11.v-slot 12.v-pre 13.v-once 14.v-memo 15.v-cloak 2. Custom instructions 3. Slot 1.v-slot 2.useSlots 3.defineSlots() VUE3 scripted series navigation 1. VUE3 follows the script – getting to […]

Qt signals and slots timers

Article directory 1 signals and slots 1.1 The concept of signals and slots 1.2 Application of signals and slots 1.3 Connection of signals and slots 1.4 Characteristics of signals and slots 1.5 Similar examples in life 1.6 Advantages of Signals and Slots 2 Use of signals and slots 2.1 Signals and slots of controls 2.2 […]

QT signals and slots_lambda expressions

Signals and Slots connect(sender,signal,receiver,slot)The parameters are all pointers sender: sender signal: signal receiver: receiver slot: Task to be executed (slot function) View common signal slots Search the corresponding class in the help document and find the signal/slot query. No signal may be in its base class Custom signals and slots Custom signal The essence of […]

The use and communication of vue components, ref attributes, dynamic labels, and slots

Component Components are: extending HTML elements and encapsulating reusable code for the purpose of reuse For example: there is a carousel image that can be used in many pages, and a carousel has js, css, html Components put js, css, and html together, with logic, style, and html Classification of components: Global components: can be […]

redis || Hash slots, cluster scaling, failover, data migration

Hash slot Redis will map each master node to a total of 16384 slots (hash slot) from 0 to 16383. View cluster information [root@redis tmp]# redis-cli -p 7001 cluster nodes d50b7e4c4943cc03e2469bffe8184aa54a355fac 172.16.3.152:8001@18001 slave 58bd479eff14eae43809aa26792295748938273d 0 1694054582682 4 connected 2b4e2e4443b6be6bed5c39d7ac7779d233b81d49 172.16.3.152:8002@18002 slave 924f2fa20bda219d317bb27b7cd2e29d0299a68f 0 1694054581662 5 connected d08715ade7f086a705ce581a3ff9d9b3dffb64aa 172.16.3.152:7002@17002 master – 0 1694054581559 2 connected 5461-10922 […]

Implementation of QT signal slots

Qt is famous for its signals and slots mechanism. But how do signals and slots work? This article will explain the internal implementation of QObject and QMetaObject and explore how to implement signals and slots under this mechanism. This article shows some code from Qt5, sometimes modified for formatting and brevity. Signals and Slots First, […]