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How to get Twitter-Bootstrap navigation to show active link?
... HAML implementation %li{:class => "#{'active' if current_page?(root_path)}"}=link_to "Home", root_path
– Brian
Feb 18 '13 at 0:44
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Which is faster in Python: x**.5 or math.sqrt(x)?
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How many square roots are you really performing? Are you trying to write some 3D graphics engine in Python? If not, then why go with code which is cryptic over code that is easy to read? The time difference is would be less than anybody c...
must appear in the GROUP BY clause or be used in an aggregate function
... to not really like it. Oracle and SQLServer just don't allow this at all. Mysql used to allow it by default, but now since 5.7 the administrator needs to enable this option (ONLY_FULL_GROUP_BY) manually in the server configuration for this feature to be supported...
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Spring Boot - Cannot determine embedded database driver class for database type NONE
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spring.datasource.url = jdbc:mysql://localhost/abc #spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.name=olabsenglishdb spring.datasource.username=xxxx spring.datasource.password=xxxx spring.datasource.driver-class-name= com.m...
What are CN, OU, DC in an LDAP search?
...e format.
You read it from right to left, the right-most component is the root of the tree, and the left most component is the node (or leaf) you want to reach.
Each = pair is a search criteria.
With your example query
("CN=Dev-India,OU=Distribution Groups,DC=gp,DC=gl,DC=google,DC=com");
In e...
How does the vim “write with sudo” trick work?
...ve probably seen the command that allows you to write on a file that needs root permission, even when you forgot to open vim with sudo:
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AngularJS : Prevent error $digest already in progress when calling $scope.$apply()
... Note that in some cases I have to check but the current scope AND the root scope. I've been getting a value for $$phase on the root but not on my scope. Think it has something to do with a directive's isolated scope, but..
– Roy Truelove
Jan 14 '13 at 15...
What is an ORM, how does it work, and how should I use one? [closed]
...most popular is relational ( you know tables, columns, pk fk etc eg Oracle MySQL, MS-SQL )
And finally the Mapping part is where you do a bridge between your objects and your tables.
In applications where you don't use a ORM framework you do this by hand. Using an ORM framework would allow you d...
CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...看下代码，大家会发现其实游览器识别是很简单的。火狐如何识别？对了，IE中对伪类支持不广泛，所以伪类是个不错的途径。(.yourClass,x:-moz-any-link, x:default)注意，这个区分伪类往往IE7也能识别，所以最好还需要把IE7单独识别出...
Role/Purpose of ContextLoaderListener in Spring?
...ed when we are initializing multiple Dispatcher servlets and still want a Root context to be shared by all DispaterServlets own context then we need to use ContextLoaderListener.
– supernova
Jan 7 '18 at 9:01
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