Course Introduction：Counting Substring Occurrences in PythonDetermining the frequency of a particular substring within a larger string is a common task in...

2024-11-20 comment 0  1073

Course Introduction：How to Isolate a Substring After a Specific OccurrenceObtaining a substring after a specified substring is a frequent task in programming....

2024-11-09 comment 0  751

Course Introduction：There are two uses of Java substring method: 1. substring(intbeginIndex) intercepts from the specified index to the end; 2. substring(intbeginIndex,intendIndex) intercepts the left-closed and right-open interval [beginIndex,endIndex). It is common in scenarios such as extracting file extensions, intercepting date parts, and processing URLs. When using it, you should pay attention to the index not exceeding the bounds, avoiding null pointer exceptions, and understand the memory optimization of Java7 and later versions, and ensure that the string is not empty and has a sufficient length before calling this method.

2025-07-18 comment 0  362

Course Introduction：Leveraging Array.findIndex() for Substring Matching in ArraysFor efficient substring matching within arrays, the Array.findIndex() function...

2024-10-29 comment 0  316

Course Introduction：Counting Substring Instances and Ordering by Occurrence in MySQLIn MySQL, you can count the occurrences of a specific substring in a string field...

2024-11-16 comment 0  508

Course Elementary  13786

Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.

Course Elementary  82307

Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).

Course Elementary  13154

Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.

Course Elementary  24601

Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.

Course Elementary  27461

Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.