Error: No named parameter with the name ‘resizeToAvoidBottomPadding’. resizeToAvoidBottomPadding: false,

replace resizeToAvoidBottomPadding to resizeToAvoidBottomInset

Error: No named parameter with the name ‘shadowThemeOnly’.

it to work by adding /…/ around shadowThemeOnly: true ThemeData inheritTheme = Theme.of(context/, shadowThemeOnly: true/);

Error: The method ‘inheritFromWidgetOfExactType’ isn‘t defined for the class ‘BuildContext’.

Example of a replacement:

Before : with InheritFromWidgetOfExactType

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static Name of(BuildContext context) {
  return context.inheritFromWidgetOfExactType(Name);  //before
}

Now with dependOnInheritedWidgetOfExactType (Recommanded)

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static Name of(BuildContext context) {
  return context.dependOnInheritedWidgetOfExactType<Name>();  //after
}

This can happen if layout contains custom windows and there are compile errors in the project. 问题

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1. In the projects Library folder there is a file "CurrentLayout-default.dwlt"
2. Go into USER/Library/Preferences/Unity/Editor-5.x/Layouts/Default and open the file "Default.dwlt" in a text editor, copy all the content of it and replace the content of the "CurrentLayout-default.dwlt" with it.
3. Open your project

ios上libevent在dns解析时崩溃的解决

libevent版本：2.0.11-stable 在DNS解析时需要使用ARC4RANDOM算法生成transaction id，而ios自带的算法库有问题，会导致崩溃。还好，libevents提供了另一套替代的算法库，使用该算法库可以不崩溃。

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_dns_base = evdns_base_new(_base, 0);
evdns_base_nameserver_ip_add(_dns_base, "8.8.8.8");

link

openssl crypto_free double free

the crash is occurring in SSL_library_init(). This should be called in a single thread before any other threads start using OpenSSL

link

libcurl thread safety

ulti-threading with libcurl

OpenSSL 1.1.0+ “can be safely used in multi-threaded applications provided that support for the underlying OS threading API is built-in.” In that case the engine is used by libcurl in a way that is fully thread-safe.

OpenSSL <= 1.0.2 the user must set callbacks.

link[https://curl.se/libcurl/c/threadsafe.html]

include of non-modular header inside framework module ‘CocoaLumberjackSwift’

Try going Build Settings under “Target” and set “Allow Non-modular Includes in Framework Modules” to YES.

libcork undefine cork_fmix32

inline function undefine when -O0
use gnu89 instead of c99

how to resolve DNS error

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traceroute github.io
dig +trace   github.io  @8.8.8.8
nslookup github.io
ping github.io