PHP---GD library implements image watermarks and thumbnails
- Pictures
- Watermark
- Font library
- Open GD library
The above introduces the PHP---GD library to implement image watermarks and thumbnails, including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.
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Use java's StringBuilder.append() function to splice strings
Jul 26, 2023 am 09:18 AM
Use Java's StringBuilder.append() function to splice strings. In Java programming, string splicing is a very common operation. In order to efficiently splice strings, Java provides the StringBuilder class, whose append() function can quickly join multiple strings together. StringBuilder is a variable character sequence that is more efficient to use than the String class. When we need to concatenate a large number of strings, use
How to access parent class properties in Python?
Aug 26, 2023 am 10:17 AM
Inobject-orientedprogramming,inheritanceallowsustocreatenewclassesthatinheritthepropertiesandmethodsofanexistingclass.Thispowerfulconceptenablescodereuse,modularity,andextensibilityinourprograms.Beforedivingintoaccessingparentclassattributes,let'shav
Summary of commonly used file operation functions in PHP
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How to use append in python
Nov 14, 2023 am 10:41 AM
In Python, append() is a method of the list object that is used to add an element to the end of the list. It should be noted that the append() method can only be used for list objects and cannot be used for other types of objects. In addition, the append() method will directly modify the original list without returning a new list.
An article that understands this point and catches up with 70% of front-end people
Sep 06, 2022 pm 05:03 PM
A colleague got stuck due to a bug pointed by this. Vue2’s this pointing problem caused an arrow function to be used, resulting in the inability to get the corresponding props. He didn't know it when I introduced it to him, and then I deliberately looked at the front-end communication group. So far, at least 70% of front-end programmers still don't understand it. Today I will share with you this link. If everything is wrong If you haven’t learned it yet, please give me a big mouth.
Let's talk about why Vue2 can access properties in various options through this
Dec 08, 2022 pm 08:22 PM
This article will help you interpret the vue source code and introduce why you can use this to access properties in various options in Vue2. I hope it will be helpful to everyone!
How to use append
Oct 25, 2023 pm 03:14 PM
append is a commonly used command line tool used to append the contents of one file to the end of another file. The usage of the append command is "append [option] source file target file", where the source file is the file to be appended and the target file is the file to be appended.
How to add a class in jQuery?
Apr 03, 2024 am 09:01 AM
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