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Article Introduction：Yii2 AdminLTE is a backend management system template based on the Yii2 framework and AdminLTE management template. It provides a wealth of controls and features that can help developers quickly build powerful backend management systems. Installation and use: Install through composer: composer requires kartik-v/yii2-adminlte to configure the AdminLTE module in config/web.php to run the migration command: yii migrate/up --migrationPath=@kartik-v/yii2-adminlte/migrations

2025-04-18 comment 0  401

Article Introduction：Laravel is a PHP framework based on MVC architecture, with concise syntax, powerful command line tools, convenient data operation and flexible template engine. 1. Elegant syntax and easy-to-use API make development quick and easy to use. 2. Artisan command line tool simplifies code generation and database management. 3.EloquentORM makes data operation intuitive and simple. 4. The Blade template engine supports advanced view logic.

2025-04-19 comment 0  980

Article Introduction：Bitcoin PLC is not a cryptocurrency, but a British fintech company that provides blockchain-based solutions to traditional financial institutions. Founded in 2013, the company initially focused on cryptocurrency mining but has shifted its focus to providing blockchain services such as payment processing, digital identity verification and compliance management. Although the company's name includes "Bitcoin," it has nothing to do with the cryptocurrency of the same name, reflecting its early business background focused on cryptocurrencies.

2024-12-13 comment 0  1159

Article Introduction：Oracle Database is a relational database management system known for its scalability, reliability and high performance. It is based on a relational model, supports massive data sets, and provides high availability, fast queries and SQL support. Its architecture includes instances, shared memory areas (SGAs) and background processes. It is widely used in e-commerce, finance, healthcare and manufacturing industries, and has advantages such as stability, performance, security, and manageability.

2025-04-11 comment 0  285

Article Introduction：Cryptocurrency is a digital asset based on cryptography principles. Its core features include the use of blockchain technology, decentralized management, high security and limited supply; it requires 1. To identify the authenticity of cryptocurrencies, 1. To examine the project white paper and team background, 2. To pay attention to community activity and transparency, 3. To view the code base and technical audit reports, 4. To evaluate the project application scenarios and implementation status; cryptocurrencies are mainly divided into four categories: 1. Native cryptocurrencies such as Bitcoin and Ethereum, 2. Tokens based on existing platforms, 3. Stable coins with stable value such as USDT, 4. Unique non-fungible tokens (NFTs) represent assets such as digital collectibles.

2025-07-10 comment 0  912

Article Introduction：RGBA is a color format based on the RGB color model and adds an alpha channel to represent transparency, while HSLA is a transparent color representation based on the HSL model and adds an alpha channel to represent transparency; 1. RGBA uses red, green and blue primary colors plus transparency values ??(0-1), such as rgba (255, 0, 0, 0.5) to represent translucent red; 2. HSLA uses hue (0-360), saturation (percentage), brightness (percentage) and transparency to define colors, such as hsla (120, 100%, 50%, 0.3) to represent green and have a transparent effect; 3. Both can be used for background, text, border and other style settings, and will not affect the transparency of other parts of the element; 4. In contrast, HSL

2025-06-23 comment 0  608

Article Introduction：To change the default Word font, select the desired font in the font settings and set it to the default value. First, click the arrow in the lower right corner of the font of the "Start" tab or press Ctrl D to enter the settings window, select Chinese and Western fonts, font sizes and effects, then click "Set as default value", and select all new documents based on Normal templates, and finally close the document and open the new document to check whether it is effective; if it does not take effect, it may be caused by the template corruption or permissions restricted.

2025-07-07 comment 0  508

Article Introduction：To distinguish between margin and padding, it is necessary to clarify the position and effect of the two functions. 1.Margin is located outside the element border, used to control the external spacing between elements and other elements; 2.Padding is located inside the border, used to control the internal spacing between content and border; 3.Margin can realize the overall offset, horizontal centering and negative value layout of elements, while Padding affects the click area, background display and element size; 4. When using it, select based on whether the external spacing or internal white space needs to be adjusted.

2025-07-09 comment 0  307

Article Introduction：Revisiting the classic: PS1 JRPG masterpiece "Breath of Fire IV" "Breath of Fire IV" was first released on the PS1 platform in 2000 and was transplanted to PC several years later. Like other works in the series, this game follows the protagonist Ryu on an adventure across the fantasy world, full of magic, dragon power, princess and more exciting elements. As a classic turn-based JRPG, it is loved by many game enthusiasts. It is worth mentioning that "Breath of Fire IV" has a unique artistic style, combining pixel-style characters with a fully rendered 3D background, and the enemy's design also incorporates pixel and 3D polygonal elements. This unique visual effect

2025-04-26 comment 0  946

Article Introduction：The key to using CSSGrid to achieve a cascade layout is the cooperation of grid-area and z-index. 1. Set the row and column ranges of different elements through grid-area to make them overlap in position; 2. Use position and z-index to control the stacking order of elements to let specific elements be displayed on the upper layer; 3. You can combine translucent background to achieve visual fusion effect; 4. For complex layouts, you can use grid-template-areas to name areas to simplify the structure, and manually specify the coverage area through grid-area. Mastering these methods can flexibly achieve various stacked layout effects.

2025-07-13 comment 0  869

Article Introduction：WebGL is suitable for data visualization because of its high performance, cross-platform compatibility and rich visual performance. It is based on GPU rendering and can efficiently process large amounts of data and complex animations such as heatmap, particle systems and 3D charts. It is recommended to use encapsulation libraries such as Three.js, PixiJS, Deck.gl, etc. to simplify development. Mobile devices need to pay attention to device compatibility, performance optimization, memory management and touch interaction adaptation. WebGLIInspector, check for OpenGL errors, simplify shaders and add log output during debugging. Only by choosing the right tools and paying attention to details can you achieve a stable and beautiful visual effect.

2025-07-16 comment 0  745

Article Introduction：When developing Vue applications, common anti-patterns include: 1. When dealing with complex logic in the template, the logic should be moved to methods or computed; 2. Abuse of v-if and v-show, and the choice should be reasonably based on the switching frequency; 3. Direct indexing to modify the array or add object attributes to destroy the responsiveness, and the mutation method or $set should be used; 4. Over-necking causes cumbersome communication of components, and state management or provide/inject should be used; 5. Incorrect use of life cycle hooks, attention should be paid to responsibilities at each stage and side effects of cleaning up.

2025-06-19 comment 0  948

Article Introduction：OOMKiller is a mechanism for Linux systems to terminate processes when memory is exhausted to prevent crashes. It can protect critical processes from being killed by adjusting the oom_score_adj value, and optimize system-level memory management through overcommit settings. It is scored based on factors such as process memory usage and importance. The higher the score, the easier it is to be killed; to prevent key processes from being killed, the oom_score_adj can be set to -1000; the overcommit_memory policy can be adjusted at the system level, limit memory and swap usage, and monitor OOM events through dmesg. In Kubernetes or Docker environments, you need to pay attention to the interaction effect of resource quotas and cgroups.

2025-07-11 comment 0  495

Article Introduction：C STL is a set of general template classes and functions, including core components such as containers, algorithms, and iterators. Containers such as vector, list, map, and set are used to store data. Vector supports random access, which is suitable for frequent reading; list insertion and deletion are efficient but accessed slowly; map and set are based on red and black trees, and automatic sorting is suitable for fast searches. Algorithms such as sort, find, copy, transform, and accumulate are commonly used to encapsulate them, and they act on the iterator range of the container. The iterator acts as a bridge connecting containers to algorithms, supporting traversal and accessing elements. Other components include function objects, adapters, allocators, which are used to customize logic, change behavior, and memory management. STL simplifies C

2025-07-01 comment 0  196

Article Introduction：The method to improve the efficiency of complex queries in MySQL 8.0 is to use generated columns and indexes. The generated column is a column that is automatically calculated based on the expressions of other columns in the table. It is divided into storage type and virtual type. The storage type column will physically store data, and the virtual column is calculated dynamically during query. 1. You can achieve the effect of "function index" by adding generated columns and creating indexes on them, such as adding full_name columns and creating indexes; 2. The benefits of generating columns include using indexes without modifying the query statement, centralized logic management, and improving readability; 3. Notes include storage type selection, expression restrictions, maintenance costs and index maintenance; 4. If you use MySQL 8.0 and above, you can use function indexes directly, but if you are compatible with old versions, you can use it repeatedly.

2025-07-17 comment 0  587

Article Introduction：:last-child is used to select the last child element under the parent element, and the type must match. For example, li:last-child can remove the last li border; but if the last child element is not a specified type, it will not take effect. Recommended usage includes scenarios such as removing the last item border of the list, and the last item can be excluded by:not(:last-child). :nth-child(n) flexibly selects the nth child element. n can be a number, odd/even or an expression, such as tr:nth-child(even) sets the background color of the odd row of the table. Note: It is based on all child elements counts, non-similar elements are also counted in order, and n starts at 0. Common misunderstandings include structural changes

2025-07-05 comment 0  952

Article Introduction：Mobile-first and desktop-first have their own applicable scenarios, and the selection needs to be based on project needs. 1. mobile-first first writes the mobile style, and then adapts to the large screen through min-width media query, which is suitable for mobile phone-first projects, such as e-commerce front desk; 2. desktop-first first designs for desktops, using max-width media query to adapt to small screens, which is suitable for desktop-first products such as background management systems; 3. The core difference between the two is that the media query direction is different. The former expands from small screen to large screen, and the latter shrinks from large screen to small screen; 4. In either way, you need to add a viewport meta tag to ensure normal display of the mobile terminal; 5. mobile

2025-07-14 comment 0  386

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  667

Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  803

Article Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  818