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Course Introduction：Python's datetime module supports time zone processing through zoneinfo. To create date and time objects, you can use date, time, datetime, and timedelta classes; for example datetime.now() gets the current time. To parse or format strings, strptime and strftime are available. In terms of time zone processing, it is easier to introduce zoneinfo after Python 3.9, such as using ZoneInfo ("America/New_York") to assign time zone information. Key points include: Ensure that the datetime object is "conscious" (including time zone), and avoid mixing "unconscious" pairs

2025-06-12 comment 0  334

Course Introduction：It is recommended to use the DateTime class to add a number of days to dates in PHP, with clear code and flexible functions. The DateTime class introduced in PHP5.2 supports object-oriented operations. The example code is: $date=newDateTime('2024-10-01'); $date->modify('5days'); echo$date->format('Y-m-d'); The output result is 2024-10-06; this method is highly readable and supports time zone setting and formatting output. You can also use strtotime() to implement it, but you need to pay attention to the time zone problem. The example is: $newDate=date("

2025-07-05 comment 0  778

Course Introduction：Go's time.Format() method formats the time string through the reference time MonJan215:04:05MST2006, and replaces the corresponding part in the template with specific values. For example: annual use "2006", monthly use "01", daily use "02", hour (24-hour system) use "15", minute use "04", second use "05", time zone use "MST"; common formats such as "2006-01-0215:04:05" represent the complete date and time,

2025-06-23 comment 0  351

Course Introduction：Common formats for date function include Y (four-bit year), m (zero month), n (no zero month), d (zero date), j (no zero date), H (24-hour hours), h (12-hour hours), i (minutes), s (seconds), A (AM/PM), for example, date('Y-m-dH:i:s') output standard time format; format Chinese customary time can be used to date('Y year n month j day H point i minute s seconds'), paired with n and j to avoid leading zeros; converting timestamps requires passing in the value generated by strtotime as the second parameter; common techniques include using date('Ymd_His'), generating file names, using date('Y'), outputting copyright year, and comparing whether the date is

2025-07-05 comment 0  833

Course Introduction：It is recommended to use the DatePeriod class to traverse date ranges in PHP. 1. The DatePeriod class was introduced from PHP5.3, and date traversal is implemented by setting the start date, end date and interval. For example, generate a date list from 2024-01-01 to 2024-01-05, which does not include the end date by default; 2. If you need to include the end date, you can adjust the end date or set the INCLUDE_END_DATE parameter; 3. The manual loop method can also complete the traversal using the DateTime object and the modify() method, which is suitable for scenarios where step size needs to be flexibly controlled; 4. Pay attention to the time zone problem that should be explicitly set to avoid the system's default time zone affecting the result; 5. PHP automatically handles leap years

2025-07-14 comment 0  160

Course Elementary  13774

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  82282

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  13145

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  24591

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  27449

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.