程序员经验分享-hwhale

使用 Rails 的捆绑程序出现问题（Mac 用户）

2023-11-21

当我尝试运行我的应用程序时，出现以下错误：

Could not find racc-1.5.2 in any of the sources
Run `bundle install` to install missing gems.

I run:

$ bundle install

回复：

Your user account isn't allowed to install to the system RubyGems.
  You can cancel this installation and run:

      bundle config set --local path 'vendor/bundle'
      bundle install

$ 输入密码两次（系统询问两次）

回复：

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-861puoracc-1.5.2/gems/racc-1.5.2/ext/racc/cparse
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-1sxj4i7.rb extconf.rb
checking for rb_ary_subseq()... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.
You may need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/$(RUBY_BASE_NAME)
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:546:in `block in try_link0'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/tmpdir.rb:93:in `mktmpdir'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:543:in `try_link0'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:570:in `try_link'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:782:in `try_func'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1069:in `block in have_func'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1068:in `have_func'
    from extconf.rb:6:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-861puoracc-1.5.2/extensions/universal-darwin-20/2.6.0/racc-1.5.2/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-861puoracc-1.5.2/gems/racc-1.5.2 for inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-861puoracc-1.5.2/extensions/universal-darwin-20/2.6.0/racc-1.5.2/gem_make.out

An error occurred while installing racc (1.5.2), and Bundler cannot continue.
Make sure that `gem install racc -v '1.5.2' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  rails was resolved to 6.1.3, which depends on
    actioncable was resolved to 6.1.3, which depends on
      actionpack was resolved to 6.1.3, which depends on
        actionview was resolved to 6.1.3, which depends on
          rails-dom-testing was resolved to 2.0.3, which depends on
            nokogiri was resolved to 1.11.1, which depends on
              racc


Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-5s57nvnio4r-2.5.5/gems/nio4r-2.5.5/ext/nio4r
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-1yywys0.rb extconf.rb
checking for unistd.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/$(RUBY_BASE_NAME)
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `block in try_compile'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:534:in `with_werror'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `try_compile'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1109:in `block in have_header'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1108:in `have_header'
    from extconf.rb:15:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-5s57nvnio4r-2.5.5/extensions/universal-darwin-20/2.6.0/nio4r-2.5.5/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-5s57nvnio4r-2.5.5/gems/nio4r-2.5.5 for
inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-5s57nvnio4r-2.5.5/extensions/universal-darwin-20/2.6.0/nio4r-2.5.5/gem_make.out

An error occurred while installing nio4r (2.5.5), and Bundler cannot continue.
Make sure that `gem install nio4r -v '2.5.5' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  rails was resolved to 6.1.3, which depends on
    actioncable was resolved to 6.1.3, which depends on
      nio4r


Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-4k1ekzbcrypt-3.1.16/gems/bcrypt-3.1.16/ext/mri
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-1xu8ddx.rb extconf.rb
creating Makefile

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-4k1ekzbcrypt-3.1.16/gems/bcrypt-3.1.16/ext/mri
make DESTDIR\= clean

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-4k1ekzbcrypt-3.1.16/gems/bcrypt-3.1.16/ext/mri
make DESTDIR\=
make: *** No rule to make target
`/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin20/ruby/config.h',
needed by `bcrypt_ext.o'.  Stop.

make failed, exit code 2

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-4k1ekzbcrypt-3.1.16/gems/bcrypt-3.1.16 for
inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-4k1ekzbcrypt-3.1.16/extensions/universal-darwin-20/2.6.0/bcrypt-3.1.16/gem_make.out

An error occurred while installing bcrypt (3.1.16), and Bundler cannot continue.
Make sure that `gem install bcrypt -v '3.1.16' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  devise was resolved to 4.7.3, which depends on
    bcrypt


Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-z8an9bbindex-0.8.1/gems/bindex-0.8.1/ext/skiptrace
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-1k62vcs.rb extconf.rb
creating Makefile

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-z8an9bbindex-0.8.1/gems/bindex-0.8.1/ext/skiptrace
make DESTDIR\= clean

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-z8an9bbindex-0.8.1/gems/bindex-0.8.1/ext/skiptrace
make DESTDIR\=
make: *** No rule to make target
`/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin20/ruby/config.h',
needed by `cruby.o'.  Stop.

make failed, exit code 2

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-z8an9bbindex-0.8.1/gems/bindex-0.8.1 for
inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-z8an9bbindex-0.8.1/extensions/universal-darwin-20/2.6.0/bindex-0.8.1/gem_make.out

An error occurred while installing bindex (0.8.1), and Bundler cannot continue.
Make sure that `gem install bindex -v '0.8.1' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  web-console was resolved to 4.1.0, which depends on
    bindex


Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-tk45tbmsgpack-1.4.2/gems/msgpack-1.4.2/ext/msgpack
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-5tsgu7.rb extconf.rb
checking for ruby/st.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/$(RUBY_BASE_NAME)
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:467:in `try_do': The compiler failed to generate an executable file.
(RuntimeError)
You have to install development tools first.
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `block in try_compile'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:534:in `with_werror'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:585:in `try_compile'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1109:in `block in have_header'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:959:in `block in checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block (2 levels) in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:361:in `block in postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:331:in `open'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:357:in `postpone'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:958:in `checking_for'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/mkmf.rb:1108:in `have_header'
    from extconf.rb:3:in `<main>'

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-tk45tbmsgpack-1.4.2/extensions/universal-darwin-20/2.6.0/msgpack-1.4.2/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-tk45tbmsgpack-1.4.2/gems/msgpack-1.4.2 for
inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-tk45tbmsgpack-1.4.2/extensions/universal-darwin-20/2.6.0/msgpack-1.4.2/gem_make.out

An error occurred while installing msgpack (1.4.2), and Bundler cannot continue.
Make sure that `gem install msgpack -v '1.4.2' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  bootsnap was resolved to 1.7.2, which depends on
    msgpack


Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-pjciubbyebug-11.1.3/gems/byebug-11.1.3/ext/byebug
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/bin/ruby -I /Library/Ruby/Site/2.6.0 -r ./siteconf20210303-5388-18f31t0.rb extconf.rb
creating Makefile

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-pjciubbyebug-11.1.3/gems/byebug-11.1.3/ext/byebug
make DESTDIR\= clean

current directory: /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-pjciubbyebug-11.1.3/gems/byebug-11.1.3/ext/byebug
make DESTDIR\=
make: *** No rule to make target
`/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/include/ruby-2.6.0/universal-darwin20/ruby/config.h',
needed by `breakpoint.o'.  Stop.

make failed, exit code 2

Gem files will remain installed in /var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-pjciubbyebug-11.1.3/gems/byebug-11.1.3 for
inspection.
Results logged to
/var/folders/_b/7g9qk9qn2tbc7m16nsnj7jww0000gn/T/bundler20210303-5388-pjciubbyebug-11.1.3/extensions/universal-darwin-20/2.6.0/byebug-11.1.3/gem_make.out

An error occurred while installing byebug (11.1.3), and Bundler cannot continue.
Make sure that `gem install byebug -v '11.1.3' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  byebug

Info:

ruby -v
ruby 2.6.3p62 (2019-04-16 revision 67580) [universal.x86_64-darwin20]

Bundler 版本 2.2.12（2021-03-01 提交 1de3f8de73）（这是我开始遇到问题的时候）

rails -v
Rails 6.1.3

我自己也有这个问题。您只需更新 Mac 版 CommandLineTools。

在我的根目录中运行此代码修复了它：

xcode-选择--安装

本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系:hwhale#tublm.com(使用前将#替换为@)

rubyonrails

ruby

MacOS

rubygems

bundler

使用 Rails 的捆绑程序出现问题（Mac 用户） 的相关文章

随机推荐

  • 检查路径是否有效

    我只是想知道 我正在寻找一种方法来验证给定路径是否有效 注意 我不想检查文件是否存在 我只想证明路径的有效性 所以如果文件可能存在于该位置 问题是 我在 Net API 中找不到任何内容 由于 Windows 支持多种格式和位置 我宁愿使用

  • 为什么 x 在内部作用域中未定义？ [复制]

    这个问题在这里已经有答案了 在下面的代码中 var x 1 function console log x var x 2 为什么console log x 时 x未定义 可变提升 实际的代码是这样执行的 var x 1 function v

  • Interface Builder > Inspector > Bindings 中的“控制器键”是什么意思？

    我在文档中找不到他们解释所有这些字段及其含义的地方 尤其是 控制器键 我不清楚 复印我在另一个问题上的回答 控制器键是您要绑定的 控制器对象的属性 的键 模型关键路径是绑定对象可以向模型对象请求更基本的对象 例如字符串或图像 或其他模型对象

  • 使用 gson 将 json 字段反序列化为纯字符串

    我正在尝试将 json 对象反序列化为 java bean 我面临的主要问题是我想对待这个领域object将 json 字符串视为普通字符串 即使它包含可能正确的 json 对象 json结构是这样的 type user object id

  • REPL 和解释器有什么区别？

    REPL 和解释器之间有技术差异吗 交互式解释器使用 REPL 不需要配备口译员 例如 您可以以非交互模式 在文件上 运行 Python 并且它不会使用读取 评估 打印循环

  • 使用 numpy fft 提取相位信息

    我正在尝试使用快速傅立叶变换来提取单个正弦函数的相移 我知道 在纸面上 如果我们将函数的变换表示为 T 那么我们有以下关系 然而 我发现虽然我能够准确捕获余弦波的频率 但除非我以极高的速率采样 否则相位不准确 例如 import numpy

  • 如何在 Windows 机器上使用 nginx 运行 django？

    我有一个 Django 项目 我已经安装了nginx服务器 我想在 Windows 机器上运行 nginx 和 django 我尝试过几个博客Nginx Django Uwsgi 但它们都需要 uwsgi 但 uwsgi 未安装在 Wind

  • 代码生成器、ORM、存储过程

    这些软件架构在哪些领域表现出色或失败 哪些关键要求会促使您选择其中一个 请假设您有可用的开发人员 他们可以完成良好的面向对象代码以及良好的数据库开发 另外 请避免圣战 所有三种技术都有优点和缺点 我感兴趣的是最适合在哪里使用哪种技术 这些工

  • 使用自签名证书在 iOS 9 中发出 HTTPS 请求 [关闭]

    Closed 这个问题是无法重现或由拼写错误引起 目前不接受答案 我想使用自签名证书向自定义服务器发出 HTTPS 请求 我正在使用 NSURLConnection 类并处理身份验证质询 但总是在控制台中收到错误消息 NSURLSessio

  • 错误：该 IP 地址无法在 Django 中分配给？

    我正在运行 Debian 6 stable 并且我正在尝试使用本地运行 Django manage py runserver命令 这就是我得到的 Validating models 0 errors found Django version

  • 删除/替换 bash 中的 html 标签

    我有一个文件 其中包含以下行 li b Some Text b More Text li 我想删除 html 标签并替换用破折号标记 所以它变成这样 Some Text More Text 我正在尝试使用 sed 但找不到正确的正则表达式组

  • Google Sheets API v4 接收公共 Feed 的 HTTP 401 响应

    在针对公共 即 发布到网络 并与 网络上的任何人 共享 电子表格运行时 我没有运气得到 Google Sheets API v4 的响应 相关文件指出 如果请求不需要授权 例如请求公共数据 那么应用程序必须提供 API 密钥或 OAuth

  • jQuery 选择器与过滤器()

    给出以下标记 ul class list li first item li li class item second item li li third item li ul 这两个表达式选择第二个里哪一个更好 ul li item or u

  • 如何在不激活其他应用程序窗口的情况下将其置于前面？

    我想将一个窗口带到前面 来自其他应用程序 目前我正在使用 SetWindowPos hwnd GetForegroundWindow 0 0 0 0 SWP ASYNCWINDOWPOS SWP NOACTIVATE SWP NOMOVE

  • 在 HSQLDB 中创建架构的启动脚本

    我正在尝试使用内存数据库来模拟 Teradata 数据库 我需要在构建表之前创建一个架构 但是 它让我很适合 我正在使用 Spring 并且有很多数据库交互import sql但是 这会在 Hibernate 创建所有表之后执行 我曾尝试使

  • qsort 与 std::sort 的性能比较？

    根据 Scott Meyers 在他的 Effective STL 一书中第 46 项的说法 他声称std sort比快约 670 std qsort由于内联的事实 我测试了自己 我发现 qsort 更快 有人能帮我解释这个奇怪的行为吗 i

  • 将 GridView 调整为所有屏幕尺寸

    我正在尝试将 GridView 实现为图像库的一部分 我按照下面的例子Android 开发者门户 该教程似乎适用于所有屏幕尺寸 如下所示 小屏幕尺寸和大屏幕尺寸的比例正确显示 左侧 小屏幕尺寸 右侧 大屏幕尺寸 但现在我的问题来了 当我想在

  • 使用具有多重继承的 Qt 信号和槽

    我有一堂课 MyClass 从 Qt 内置对象继承了大部分功能 QGraphicsTextItem QGraphicsTextItem间接继承自QObject MyClass还实现了一个接口 MyInterface class MyClas

  • HttpClient 异步请求未完成循环发送的大批量请求

    我想我已经成功地进行了一次测试 至少在我的系统上重复地显示了这个问题 这个问题与 HttpClient 用于不良端点 端点不存在 目标已关闭 有关 问题是已完成的任务数量低于总数 通常是几个左右 我不介意请求不起作用 但这只会导致应用程序在

  • 使用 Rails 的捆绑程序出现问题（Mac 用户）

    当我尝试运行我的应用程序时 出现以下错误 Could not find racc 1 5 2 in any of the sources Run bundle install to install missing gems I run bu

热门标签