我正在尝试在OS X上安装ruby-oci8.
我尝试过安装和不安装sudo.
错误消息没有sudo:
gem install ruby-oci8
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /Library/Ruby/Gems/1.8 directory.
错误消息sudo:
sudo gem install ruby-oci8
Password:
Building native extensions. This could take a while...
ERROR: Error installing ruby-oci8:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
checking for load library path...
DYLD_LIBRARY_PATH is not set.
checking for cc... ok
checking for gcc... yes
checking for LP64... yes
checking for sys/types.h... yes …我有一个有条件地调用函数的shell脚本.
例如:-
if [ "$choice" = "true" ]
then
process_install
elif [ "$choice" = "false" ]
then
process_exit
fi
process_install()
{
commands...
commands...
}
process_exit()
{
commands...
commands...
}
请让我知道如何做到这一点.
我正在UIButton用图像创建一个
我为此编写了以下代码:
let btnImg=UIButton.buttonWithType(UIButtonType.Custom) as UIButton
let img = UIImage(named: "turn_left") as UIImage
btnImg.setTitle("Turn left", forState: UIControlState.Normal)
btnImg.setImage(img, forState: UIControlState.Normal)
btnImg.frame = CGRectMake(10, 150, 200, 45)
self.view.addSubview(btnImg)
但我得到以下错误let img = UIImage(named: "turn_left") as UIImage:
Swift Compiler error:
Downcast from 'UIImage?' to 'UIImage' only unwraps optionals; did you mean to use '!'?
使用旺盛的ctags 5.8 for gcc 4.4.3 c89
我刚刚开始使用exuberant-ctags,我只是想知道你添加了什么选项.
这是一个列表,我只是想知道添加太多可能是超过杀死.
$ ctags --list-kinds=c
c classes
d macro definitions
e enumerators (values inside an enumeration)
f function definitions
g enumeration names
l local variables [off]
m class, struct, and union members
n namespaces
p function prototypes [off]
s structure names
t typedefs
u union names
v variable definitions
x external and forward variable declarations [off]
我打算使用以下内容:
ctags -e --c-kinds=+defgpstux -R
我只是想知道:这有点矫枉过正吗？
c classes No -- I don't have any classes as this is …我正在使用Twitter的Bootstrap翻译成SCSS文件.它适用于本地开发,但是当我预编译并推送到Heroku(使用Cedar堆栈)时,我得到了这个:
> Started GET "/" for 74.57.16.130 at 2012-01-28 17:16:36 +0000
> Processing by StaticPagesController#home as HTML Rendered
> static_pages/home.html.erb within layouts/application (0.7ms)
> Completed 500 Internal Server Error in 4ms
>
> ActionView::Template::Error (couldn't find file 'twitter/bootstrap'
> (in /app/app/assets/stylesheets/application.scss.css:11)):
> 8: </head>
> 6: <%= javascript_include_tag "application" %>
> 4: <title><%= full_title(yield(:title)) %></title>
> 2: <html>
> 5: <%= stylesheet_link_tag "application", :media => "all" %>
app/views/layouts/application.html.erb:5:in
> `_app_views_layouts_application_html_erb___288948710373692320_32137840'
> 3: <head> cache: [GET /] miss
>
> 7: …我有一个后台服务,当内存不足时,它有时会被操作系统杀死.
开发指南简单地说"如果您的服务已启动,那么您必须将其设计为优雅地处理系统重新启动.如果系统终止您的服务,它会在资源再次可用时立即重新启动".
在一个(相关的)问题上,当服务被操作系统杀死时,在服务中启动的主动运行的AsyncTask会发生什么,即没有service.onDestroy被调用？它是否继续运行或与服务一起静静地撕开？
是谷歌API的Ruby客户的最佳选择？
我有一个网站example.com和用户,我希望他们在example.com上看到他们的谷歌分析统计数据,我该怎么办？
我可以看到这个例子,但我无法弄清楚如何开始.
google-analytics ruby-on-rails google-analytics-api ruby-on-rails-3
有没有办法确定Android应用程序(即使用Java)是否提供Google Streetview全景图.
似乎没有替代PHP或Python或其他服务器端技术的替代品.
调用谷歌街景没有全景的影响只是一个黑屏和一个"旋转的东西".
我正在尝试在表单中添加日期字段.
我添加了bootstrap-datepicker-rails gem,所有需要的css和javascript.
当我在日历中选择日期并单击"保存"时,它不会在数据库中更新.
这是表单的代码:
= simple_form_for @model
= f.input :date_last, :required => true,
:input_html => { data: {behaviour: "datepicker"}},
:as => :string
= f.button :submit, 'Save', :class => 'btn btn-primary'
我认为这可能与格式有关,但不确定在哪里查看.
更新
当我将默认格式更改为yyyy-mm-dd(默认为mm/dd/yyyy)时,它可以正常工作:
$('[data-behaviour~=datepicker]').datepicker({"format": "yyyy-mm-dd", "weekStart": 1, "autoclose": true});
我正在为电影名称存储创建一个Ruby哈希.
当哈希的键是包含空格的字符串时,它可以正常工作.
如:
movies = {"Avatar" => 5, "Lord of the rings" => 4, "Godfather" => 4}
现在我试图用符号替换字符串的使用:
movies = {Avatar: 5, Lord of the rings: 4, Godfather: 4}
显然这不起作用.
Ruby如何处理符号命名中的空格？