AWSS3 iOS SDK tutorial
AWSS3 iOS SDK Tutorial
Create AWSServiceConfiguration
According to the documentation comments, there are two ways to create
Method 1: Customize the creation of ServiceConfiguration
Created according to AK/SK/token
AWSBasicSessionCredentialsProvider *provider = [[AWSBasicSessionCredentialsProvider alloc]
initWithAccessKey:access_ke ...
Posted by spxmgb on Wed, 18 Jan 2023 11:22:27 +0300
R language performs text sentiment analysis on twitter data | with code data
Original link: http://tecdat.cn/?p=4012Recently we were asked by a client to write a research report on text sentiment analysis, including some graphics and statistical output.We take the Twitter data captured by the R language as an example, conduct text mining on the data, and further conduct sentiment analysis, so as to obtain a lot of inter ...
Posted by grazzman on Thu, 08 Dec 2022 03:51:50 +0300
Sagit.Framework For IOS development framework tutorial 11: controller base class STController
preface:
In the Sagit framework, all new controllers and UI views need to inherit from the base class of the framework. This article introduces the base class of the controller: STController
STController: basic definition
#import <UIKit/UIKit.h>
#import "STEnum.h"
@class STView;
@class STHttp;
@class STMsgBox;
@interface STController : ...
Posted by ethan89 on Tue, 24 May 2022 17:35:03 +0300
Flutter status management Provider
In fluent, state management is the top priority. Whenever we talk about this topic, there are always endless words.
After formally introducing the Provider, why do we need state management. If you already know this clearly, it is recommended to skip this section directly.If our application is simple enough, as a declarative framework, you may o ...
Posted by bickyz on Mon, 23 May 2022 06:06:52 +0300
iOS video development: Video H264 hard coding
preface
Series of articles:iOS video development (I): video captureiOS video development (II): Video H264 hard codingiOS video development (III): Video H264 hard decodingiOS video development (IV): popular understanding of YUV data
Last iOS video development (I): video capture We have introduced how to collect the video data of iOS camera. Th ...
Posted by stephaneey on Fri, 20 May 2022 18:11:20 +0300
Message forwarding mechanism
1. Dynamic method analysis
When an object receives a message that cannot be processed, it will call the following methods. The former will be called when calling class methods, and the latter will be called when calling object methods
//Class method call not implemented
+ (BOOL)resolveClassMethod:(SEL)sel
//Instance method call not implemented
...
Posted by hjunw on Fri, 20 May 2022 13:20:56 +0300
iOS Swift No.26 - access control 2
Chapter 26 access control
3. Access Control Syntax
Before the entity introducer, we can use these five modifiers (open, public, internal, fileprivate or private) to define the five access levels of the entity.
public class SomePublicClass {}
internal class SomeInternalClass {}
fileprivate class SomeFilePrivateClass {}
private class SomePrivateC ...
Posted by zoobooboozoo on Thu, 19 May 2022 16:33:45 +0300
oc -- Foundation framework -- string
Create string
NSString represents a string whose character sequence is immutable. NSString is very powerful. oc string processing is much simpler and easier to use than C language characters. NSString has these functions: 🎇 To create a string, you can use the instance method starting with init, the class method starting with string, or the fo ...
Posted by kh411dz on Wed, 18 May 2022 02:43:07 +0300
Fluent asynchronous programming - event loop, Isolate, Stream
Event loop, Isolate
Before we start, we need to understand that Dart is single threaded and that fluent depends on Dart
If you know event loop in js The whole process of asynchronous dart is well understood
Let's look at a piece of code first
import 'dart:async';
Future eventLoop() async{
print('A');
Future((){
print('F');
scheduleMicrota ...
Posted by WinterDragon on Mon, 16 May 2022 23:21:38 +0300
Event delivery and response mechanism of iOS
Objective: to understand the event transmission process and response mechanism, which can help deal with some gesture conflicts, custom gestures and other problems
###1. Event classification?
1.1 in iOS system, events are divided into four categories:
UIEventTypeTouches: touch phone screen events
UIEventTypeMotion: mobile phone shaking and ...
Posted by notonurnelly on Mon, 16 May 2022 06:51:57 +0300