Programmer Think

1. base64 encodes binary data in ASCII The base64 module contains functions that transform binary data into a subset of ASCII suitable for transmission using the plain text protocol. Base64, Base32, Base16, and Base85 encode to convert 8-bit bytes into characters within the range of ASCII printable characters, leaving more bits to represent dat ...

The TronTool development package is suitable for rapidly increasing the support ability of Tron/USDT-TRC20 digital assets for PHP applications, that is, it supports the application scenarios using its own Tron blockchain nodes, and also supports the lightweight deployment scenarios based on the official public API services of Tron. Official dow ...

Android solves the overlapping problem of Fragment using replace method Today, when using Fragment for replace switching, I found that there was no response:The layout is like this <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" ...

Main content of this paper character byte Structure and memory view Conversion between characters and bytes -- codec BOM ghost character Continue tomorrow...   python advanced - Directory The code in this article is placed on github: https://github.com/ampeeg/cnblogs/tree/master/python advanced   character ''' Character encoding is a pro ...

Local variable table As we know, the start of a method call is equivalent to the stack frame's stack in and out of the Java virtual machine stack. Stack frame includes local variable table, operand stack, dynamic link, return address, etc. Figure below: each thread corresponds to a Java virtual machine stack. There are many stack frames in t ...

Foreword: For the matters of wechat applet global sharing control, please refer to: Wechat applet global sharing and forwarding control implementation - no need to configure the page separately from now on. About the official sharing of Alipay applet's official sharing, see official documents. Page event handler onShareAppMessage(options: Obj ...

Add throttling Custom throttling method Limit access to 3 times within 60s (1) Create a new throttle.py under the API folder. The code is as follows: # utils/throttle.py from rest_framework.throttling import BaseThrottle import time VISIT_RECORD = {} #Save access records class VisitThrottle(BaseThrottle): '''60s Can only ...

I. Introduction Create a new class XmlParseHandler.java, which needs to inherit DefaultHandler or implement ContentHandler interface. Here we inherit DefaultHandler (implement ContentHandler interface), which is the core of SAX parsing. We need to rewrite the following methods we care about. startDocument(): called at the beginning of docume ...

Unicode is an industry standard in the field of computer science. JavaScript itself is written using the Unicode character set, Sometimes we need to transcode the obtained value when we need to rearrange and compile a piece of text or content, Make a note, In fact, it mainly uses the charCodeAt() method and escape( ...

Because HttpServletRequest in preHandle only has setAttribute, no setParameter and no add method So there is no way to add parameters directly. I checked a lot of data from the Internet, basically speaking, I need to rewrite HttpServletRequestWrapper Just do what you say. Check the blog on the Internet to see how others can realize it. Maybe be ...