I. what is YAML
YAML is a special language for writing configuration files, which is far more convenient than JSON format.
The design goal of YAML is to facilitate human reading and writing.
YAML is a lighter file format than XML and JSON, and it's simpler and more powerful. It can express structure through indentation. Does it sound like a ...
Posted by agnalleo on Wed, 20 Nov 2019 04:46:16 -0800
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Node.js asynchronous programming callback
We know that there are two ways to handle events in Node.js, callback and EventEmitter. ...
Posted by isedeasy on Tue, 19 Nov 2019 20:15:42 -0800
In the observer pattern, the subject object generally has a core service that other services depend on, and maintains a list of other objects that depend on this core service (that is, the list of observers or monitors). When the subject object changes, the observer should change his or her state or perform some operations
Three roles in the o ...
Posted by fnairb on Tue, 19 Nov 2019 11:42:17 -0800
1 set cookie s
In this case, the application name is cookie
from django.db import models
from django.db import models
username = models.CharField(max_length=64)
password = models.CharField(max_length=64)
python manage.py makemigrations
python manage.py migrate
Posted by BlueGemini on Tue, 19 Nov 2019 08:19:28 -0800
Why do we have cookie s and session s?
Browser sends http request to server, establishes session, server returns complete, session ends, browser and service disconnect
Send the http request again and establish the session again. The user information will be lost. The server cannot distinguish the requested information.
A login account. After t ...
Posted by NINTHTJ on Tue, 19 Nov 2019 07:26:37 -0800
1. Overview of flask blueprint
2. A simple blueprint implementation
2.1 example 1:
2.2 example 2:
3. Blueprint to realize the addition, deletion, modification and search of student information
3.1 view student information:
3.2 student information update:
3.3 increase ...
Posted by FD_F on Mon, 18 Nov 2019 23:51:34 -0800
CBrother scripting language 10 minutes to write a program to save the "Dogbuster Server"
In a new company, I took over a piece of c++ server code and leaked memory everywhere. This server has no database. Just restart it after hanging up. The company has been living for several years. Restart it regularly or every day. It may hang up ...
Posted by Daniel.Conaghan1 on Mon, 18 Nov 2019 17:46:06 -0800
I. serialization module
Serialization: converting data types from python or other languages to string types
json module: is a serialization module.
Is a "third party" special data format.
You can use the python data type -- json data format -- string -- File
To use python data in ...
Posted by richardbotw on Mon, 18 Nov 2019 01:47:32 -0800
Please implement a function to match regular expressions including '.' and '*'. The character '.' in the pattern indicates any character, while '*' indicates that the character before it can appear any number of times (including 0 times) In this problem, matching means that all characters of a string match th ...
Posted by PunjabHaker on Sun, 17 Nov 2019 13:54:48 -0800
Extract files after downloading
Due to the processing of Chinese files, precompiling is required
To work with the CJK language, do the following before running setup.py install:
python tools\conv_cmap.py -c B5=cp950 -c UniCNS-UTF8=utf-8 pdfminer\cmap Adobe- ...
Posted by smoked1 on Sun, 17 Nov 2019 12:57:28 -0800