wenghengcong’s gists

wenghengcong / .eslintrc-parameter-instruction.js

Created November 23, 2019 12:13 — forked from rswanderer/.eslintrc-parameter-instruction.js

ESLint配置文件.eslintrc参数说明


	/*
	* ESLint的JSON文件是允许JavaScript注释的，但在gist里显示效果不好，所以我把.json文件后缀改为了.js
	*/

	/*
	* ESLint 配置文件优先级：
	* .eslintrc.js(输出一个配置对象)
	* .eslintrc.yaml
	* .eslintrc.yml

wenghengcong / 系统宏

Last active July 11, 2019 10:41

SDWebImage

	#import <TargetConditionals.h>

	#ifdef __OBJC_GC__
	#error SDWebImage does not support Objective-C Garbage Collection
	#endif

	// Seems like TARGET_OS_MAC is always defined (on all platforms).
	// To determine if we are running on macOS, use TARGET_OS_OSX in Xcode 8
	#if TARGET_OS_OSX
	#define SD_MAC 1

wenghengcong / Dispatch

Last active July 11, 2019 12:08

宏和关键字

	1. 主线程安全执行- source:SDWebImage
	dispatch_main_async_safe

	#ifndef dispatch_main_async_safe
	#define dispatch_main_async_safe(block)\
	if (dispatch_queue_get_label(DISPATCH_CURRENT_QUEUE_LABEL) == dispatch_queue_get_label(dispatch_get_main_queue())) {\
	block();\
	} else {\
	dispatch_async(dispatch_get_main_queue(), block);\
	}

wenghengcong / 修改空间的内部属性.m

Last active January 6, 2022 08:37

KVC的应用

	[textField setValue:[UIFont systemFontOfSize:25.0] forKeyPath:@"_placeholderLabel.font"];

	获取空间内部属性：
	unsigned int count = 0;
	objc_property_t *properties = class_copyPropertyList([UITextField class], &count);
	for (int i = 0; i < count; i++) {
	objc_property_t property = properties[i];
	const char *name = property_getName(property);
	NSLog(@"name:%s",name);
	}

wenghengcong / 支持多平台的库

Created May 17, 2019 16:44

编译脚本

	# Type a script or drag a script file from your workspace to insert its path.

	# Sets the target folders and the final framework product.
	# 如果工程名称和Framework的Target名称不一样的话，要自定义FMKNAME
	# 例如: FMK_NAME = "MyFramework"
	FMK_NAME=${PROJECT_NAME}
	# Install dir will be the final output to the framework.
	# The following line create it in the root folder of the current project.
	INSTALL_DIR=${SRCROOT}/Products/${FMK_NAME}.framework
	# Working dir will be deleted after the framework creation.

wenghengcong / 创建

Created May 17, 2019 01:36

WKWebView

	NSString *backGroundColorSource = @"document.body.style.background = \"#ffffff\"";

	WKUserScript *backGroundColorUserScript = [[WKUserScript alloc] initWithSource:backGroundColorSource injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];

	WKUserContentController *userController = [[WKUserContentController alloc] init];
	[userController addUserScript:backGroundColorUserScript];

	WKPreferences *preference = [[WKPreferences alloc] init];
	preference.minimumFontSize = 25;

wenghengcong / 规则

Created May 10, 2019 02:09

[ShadowSocks 自定义规则]

	规则大概描述如下

	通配符支持，如 .example.com/ 实际书写时可省略 * 如 .example.com/ 意即 .example.com/
	正则表达式支持，以\开始和结束，如 [\w]+://example.com\
	例外规则 @@，如 @@.example.com/ 满足@@后规则的地址不使用代理
	匹配地址开始和结尾 \|，如 \|http://example.com、example.com\| 分别表示以 http://example.com 开始和以 example.com 结束的地址
	\|\| 标记，如 \|\|example.com 则 http://example.com 、example.com 、ftp://example.com 等地址均满足条件，只用于匹配地址开头
	注释 ! 如 ! Comment
	分隔符^，表示除了字母、数字或者 _ - . % 之外的任何字符。如 http://example.com^ ，http://example.com 和 http://example.com:8000 均满足条件，而 http://example.com.ar 不满足条件
	如何使用自定义规则

wenghengcong / 扩大点击区域

Last active May 9, 2019 16:13

事件

	- (UIView )hitTest:(CGPoint)point withEvent:(UIEvent )event {
	if (!self.isUserInteractionEnabled \|\| self.isHidden \|\| self.alpha <= 0.01) return nil;

	CGFloat inset = 45.0f - 78.0f;
	CGRect touchRect = CGRectInset(self.bounds, inset, inset);

	if (CGRectContainsPoint(touchRect, point)) {
	for (UIView *subview in [self.subviews reverseObjectEnumerator]) {
	CGPoint convertedPoint = [subview convertPoint:point fromView:self];
	UIView *hitTestView = [subview hitTest:convertedPoint withEvent:event];

wenghengcong / 语法

Created May 7, 2019 13:07

Block #Objective-C

	As a local variable:
	returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};


	As a property:
	@property (nonatomic, copy, nullability) returnType (^blockName)(parameterTypes);

	As a method parameter:
	- (void)someMethodThatTakesABlock:(returnType (^nullability)(parameterTypes))blockName;

wenghengcong / Having

Last active May 15, 2019 08:51

SQL


	https://www.yiibai.com/sql/sql-having.html

	Where和Having的异同

	(1)where是查询返回结果之前进行过滤的

	(2)having是查询返回结果之后，对结果进行过滤的

	(3)在SQL中增加 HAVING 子句原因是，where关键字无法与聚合函数一起使用,having子句常跟group by一同使用，过滤分组后的数据

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