Found a total of 10000 related content
How do I use Sublime Text's column selection mode?
Article Introduction:SublimeText's column selection mode quickly selects rectangular areas through keyboard and mouse combinations to achieve simultaneous editing of multiple rows. Specific methods include: 1. Drag the Alt mouse on Windows/Linux, and drag the Option mouse on macOS; 2. Select the exact box to use Shift Alt (Windows/Linux) or Shift Option (macOS) to add mouse clicks; 3. Keyboard shortcut Ctrl Alt up/down arrow (Windows/Linux) or Cmd Option up/down arrow (macOS) to add vertical cursor to simulate column selection effect. After entering this mode, the input, deletion, copy and paste operations are all used for all selections.
2025-07-19
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How to remove a package in Sublime Text
Article Introduction:To uninstall a package in SublimeText, first open the command panel (Ctrl Shift P or Cmd Shift P), enter "PackageControl:RemovePackage" and select the option, then select the package to delete from the list and confirm. SublimeText will uninstall the package immediately and take effect without restarting, although some interface elements may not disappear after restarting. 1. Open SublimeText and call up the command panel; 2. Enter and select "PackageControl:RemovePackage"; 3. Select the target package from the installed package list; 4. Click or press Enter to confirm the deletion, and the operation is completed.
2025-07-26
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how to apply a transition to multiple clips at once in Premiere Pro
Article Introduction:There are three ways to apply transitions for multiple clips at once in PremierePro: First, after selecting all clips, select transitions in the effect panel and drag them to one clip point, right-click and select "Apply default transitions for all clips"; secondly, hold Shift to select multiple clip points, double-click or drag the desired transition to any selected position to apply in batches; finally, set the default transitions to speed up the workflow, the path is "Sequence>Apply default transitions to all clips", and select and set as default in the pop-up window. In addition, the duration of all transitions can be adjusted through the Preferences > Timeline or the right-click menu.
2025-07-25
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500
What are the shortcut keys for LibOffice on Debian
Article Introduction:The shortcut keys for customizing LibOffice on Debian systems can be adjusted through system settings. Here are some commonly used steps and methods to set LibOffice shortcut keys: Basic steps to set LibOffice shortcut keys Open system settings: In the Debian system, click the menu in the upper left corner (usually a gear icon), and select "System Settings". Select a device: In the system settings window, select "Device". Select a keyboard: On the Device Settings page, select Keyboard. Find the command to the corresponding tool: In the keyboard settings page, scroll down to the bottom to see the "Shortcut Keys" option. Clicking it will bring a window to a pop-up. Find the corresponding LibOffice worker in the pop-up window
2025-05-16
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How to reduce the size of a golang docker image
Article Introduction:The core way to narrow down the GolangDocker image is to use multi-stage build and select the smallest base image. 1. Use multi-stage construction, compile the program in the first stage, and copy only executable files in the second stage; 2. Select lightweight basic images such as alpine, distroless or scratch; 3. Set CGO_ENABLED=0 and -ldflags"-s-w" during compilation to reduce binary volume; 4. Use .dockerignore to exclude unrelated files to speed up construction and reduce images.
2025-07-14
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803
How to use the required attribute on a select dropdown?
Article Introduction:To ensure that the user must select an option from the drop-down menu in the HTML form, use the required property to implement required verification. 1. Add required attribute to the tag, 2. Set the first value to an empty string to trigger verification failure, 3. You can simulate the placeholder effect through disabled and selected, 4. If you need more flexible control, you can manually judge the selected value by JavaScript. Correctly setting the null value option is the key to ensuring validation takes effect.
2025-07-11
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127
css tooltip example
Article Introduction:The CSSTooltip effect is implemented through pure CSS without JavaScript; 2. Use :hover to trigger visibility and opacity changes to achieve display and fade in animation; 3. The prompt box is positioned by position:absolute, and left:50% plus transform:translateX (-50%) to achieve horizontal centering; 4. Use ::after pseudo-element to create a small arrow pointing down; 5.z-index:1 to ensure that the prompt box is at the top level; 6. You can adjust the attributes such as top, bottom and border-color to achieve prompt boxes in different directions up, down, left and right directions; 7. It is recommended to use vi
2025-07-28
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How to change screen resolution in Windows 11?
Article Introduction:There are three ways to adjust the resolution of Windows 11 screen: 1. Adjust through the "Settings" menu, open the "Start Menu" and select "Settings", enter the "System"-"Display" and find the "Show Resolution" drop-down menu, and select the recommended options; 2. Right-click the desktop to quickly adjust, click "Show Settings" and then operate the same as above; 3. Troubleshoot the reasons when encountering problems, such as updating the graphics card driver, checking the connection cable, confirming the monitor support range, etc. Each approach corresponds to different scenarios, ensuring resolution is adapted to the display for the best visual effect.
2025-07-09
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379
Tutorial on connecting exchanges to public chain wallets
Article Introduction:The exchange's connection with public chain wallets is the key to asset management and transaction transfers. The tutorial is broken down into eight steps: Select and obtain an API key for a compatible wallet Set up an API server Integrate the wallet SDK Create and manage wallet accounts Enable transaction transfers Implement callback functionality Test thoroughly Deploy to a production environment to enable the exchange to process user assets and transactions.
2024-10-17
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350
How to use Disk Utility to erase a Mac for a clean macOS install?
Article Introduction:To completely erase the Mac drive for clean installation, you must first enter recovery mode and use Disk Utility. The steps are as follows: 1. Press and hold Command R after shutting down the power and start to enter recovery mode; 2. Open Disk Utility and select "Show All Devices" to view the complete drive information; 3. Select the target volume or physical drive, click "Erase" and select the appropriate format (APFS or MacOSExtended); 4. If you need to sell or give away the device, you can enable the safe erase option; 5. Exit Disk Utility and reinstall macOS after completion. Make sure to back up important data before operation.
2025-07-02
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188
How to change screen resolution on Windows?
Article Introduction:There are three ways to adjust the Windows screen resolution 1. Right-click the desktop and select "Display Settings" and select the appropriate value in the "Display Resolution" drop-down menu and save it; 2. Find "Adjust Screen Resolution" through the small icon mode of the control panel to set it; 3. If you encounter problems, you can wait for the system to automatically restore, restart the Explorer or enter safe mode to adjust, and ensure that the graphics card driver is the latest version. Each method can achieve resolution adjustment, but it needs to be reasonably selected according to the monitor support range to ensure the display effect.
2025-07-23
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150
how to add a border to a page in Word
Article Introduction:To add a page border to a Word document, first select the "Design" or "Page Layout" tab, click "Page Border", select the style, color and width in the pop-up window, and make sure "Apply to" is set to the entire document or the specified page; if decorative borders are required, you can select the pattern in the "Art Pattern" drop-down menu, or set the style of different edges through "Custom"; if you only need to add a border to a single page, you need to insert a section break to separate the page into sections, close "Link to previous one", and then apply the border.
2025-07-10
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456
how to copy and paste attributes in Premiere Pro
Article Introduction:PremierePro's Copy and Paste Properties feature saves time and maintains edit consistency by copying the effects of one clip or tweaking it and applying it to another clip. When using it, first apply the desired effect to the source clip, right-click to select "Copy Properties", then right-click to select "Paste Properties" on the target clip, and check the specific attributes to be copied in the pop-up window, such as Lumetri color tuning, audio effects, transitions, speed changes, etc.; common application scenarios include the color of the unified interview clip, copying audio processing settings, and keeping the movement effects of similar shots consistent; precautions include the effects that may not be fully adapted between different clips, and the effect should be previewed and confirmed, and the efficiency can be further improved with presets.
2025-07-19
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739
how to add a border to a table in Word
Article Introduction:The steps to border a table in Word are as follows: First, select the table or cell, click the "Border" button under the "Start" tab, or set it through the "Layout" tab that automatically pops up the table; secondly, select different styles according to your needs, such as line thickness, color, and line style, and can be applied uniformly or set a certain border separately; finally pay attention to common problems, such as color contrast, default style and border width, to ensure that the effect is clear and visible. Mastering these operations can effectively improve the professionalism and readability of the table.
2025-07-09
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673
How to create a CSS-only tooltip?
Article Introduction:To create a pure CSS prompt box, you must first set up an HTML structure and use a container containing trigger elements and prompt text; 2. Hidden the prompt text by default through CSS, and use the :hover pseudo-class to achieve hover display; 3. Add position, visibility, opacity and transition attributes to achieve smooth display effect; 4. Optionally add pseudo-elements::after to create a pointing arrow and adjust the position to achieve different directions of up, down, left and right; 5. Key points include using visibility instead of display to support transition animation, ensuring that the parent container is positioned as a relative child element and absolute, and using z-index to ensure complete hierarchical display.
2025-07-28
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612
Query optimization in MySQL is essential for improving database performance, especially when dealing with large data sets
Article Introduction:1. Use the correct index to speed up data retrieval by reducing the amount of data scanned select*frommployeeswherelast_name='smith'; if you look up a column of a table multiple times, create an index for that column. If you or your app needs data from multiple columns according to the criteria, create a composite index 2. Avoid select * only those required columns, if you select all unwanted columns, this will only consume more server memory and cause the server to slow down at high load or frequency times For example, your table contains columns such as created_at and updated_at and timestamps, and then avoid selecting * because they do not require inefficient query se
2025-04-08
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1048
How to create a background gradient using CSS?
Article Introduction:The way to add background gradients to a web page is to use CSS's background-image with linear-gradient or radial-gradient. 1. The most common linear gradient is the up and down direction, the syntax is background-image:linear-gradient(tobottom, white, lightgray) or abbreviated as background-image:linear-gradient(#fff,#f0f0f0); 2. The direction can be changed, such as toright means a gradient from left to right; 3. Radial gradient is suitable for the circular diffusion effect, and the syntax is background-
2025-07-23
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200
How to speed up Windows 10?
Article Introduction:Windows 10 slows down and does not necessarily require reinstalling the system. You can optimize and speed up by following methods: 1. Turn off the visual effects, open "Control Panel" > "System" > "Advanced System Settings", click on the "Performance" setting, select "Adjust to Best Performance" or manually cancel unwanted effects; 2. Disable the power-on self-start program, right-click the program through the "Start" tab of the Task Manager to select "Disable" to reduce memory and CPU usage; 3. Clean disk space, use the "Disk Cleanup" tool or enable "Storage Awareness", uninstall useless software and migrate to the solid-state drive to improve read and write speed; 4. Adjust the power settings, enter "Power Options" and select "High Performance" mode to improve processor performance allocation.
2025-07-03
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202
how to do a hanging indent in word
Article Introduction:The method of setting up hanging indentation in Word is as follows: First, select the paragraph, right-click to select "Paragraph" or enter the settings window through the menu bar; secondly, select "Hang" in "Special Indentation" and set the indentation value; finally click "OK" to complete the setting. Hanging indentation is mainly used in document scenarios with strict format requirements such as references. For batch processing of multiple paragraphs, you can select and set them uniformly at one time. Additionally, you can save settings as custom styles for efficiency. After mastering these steps, the suspension indent effect can be efficiently achieved.
2025-07-30
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300
How to search for filters on Instagram stories
Article Introduction:Open Instagram and slide into the Stories camera interface; 2. Swipe left and right at the bottom of the camera interface to browse the recently used filters; 3. Click "Browse Effect" to enter the filter library; 4. Enter keywords such as "glow" and "anime" or creator's name in the search bar at the top to find specific filters; 5. Click the filter to preview and select "Try" to use; 6. Swipe up to view and save the filters they use; 7. The used filters will be automatically added to your personal favorites, and you can long press and manage sorting or delete them through the personal effect page. Through these steps, users can easily find, use and manage InstagramStories filters, and ultimately build their own favorites for common filters.
2025-07-26
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525