大约有 45,000 项符合查询结果（耗时：0.0658秒） [XML]
What is the difference between Class and Klass in ruby?
...
class is a keyword used to define a new class. Since it's a reserved keyword, you're not able to use it as a variable name. You can't use any of Ruby's keywords as variable names, so you won't be able to have variables named def or module or if or end, etc - class is no differe...
Will using 'var' affect performance?
...y I see so many examples use the varkeyword and got the answer that while it is only necessary for anonymous types, that it is used nonetheless to make writing code 'quicker'/easier and 'just because'.
...
How do you unit test private methods?
...brary that will have some public & private methods. I want to be able to unit test the private methods (mostly while developing, but also it could be useful for future refactoring).
...
How can I automate the “generate scripts” task in SQL Server Management Studio 2008?
...
What Brann is mentioning from the Visual Studio 2008 SP1 Team Suite is version 1.4 of the Database Publishing Wizard. It's installed with sql server 2008 (maybe only professional?) to \Program Files\Microsoft SQL Server\90\Tools\Publishing\1.4. The VS call from server explorer is simply c...
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
...
[EDIT: Warning: The entire ensuing discussion will be possibly outmoded or at least heavily mitigated by iOS 8, which may no longer make the mistake of triggering layout at the time that a view transform is applied.]
Autolayout...
Lambda function in list comprehensions
...
The first one creates a single lambda function and calls it ten times.
The second one doesn't call the function. It creates 10 different lambda functions. It puts all of those in a list. To make it equivalent to the first you need:
[(lambda x: x*x)(x) for x in range(10)]
Or better...
Reset push notification settings for app
I am developing an app with push notifications. To check all possible ways of user interaction, I'd like to test my app when a user declines to have push notifications enabled for my app during the first start.
...
When to use the different log levels
There are different ways to log messages, in order of fatality:
18 Answers
18
...
Difference between DateTime and Time in Ruby
... concerned. Picking one for consistency is probably best, so try and mesh with what your libraries expect. For example, ActiveRecord prefers DateTime.
In versions prior to Ruby 1.9 and on many systems Time is represented as a 32-bit signed value describing the number of seconds since January 1, 197...
What does the unary plus operator do?
What does the unary plus operator do? There are several definitions that I have found ( here and here ) but I still have no idea what it would be used for. It seems like it doesn't do anything but there has be a reason for it, right?
...