大约有 16,000 项符合查询结果（耗时：0.0245秒） [XML]
How do I write good/correct package __init__.py files
...owerful reasons to use import * in an __init__.py to import packages is to be able to refactor a script that has grown into multiple scripts without breaking an existing application. But if you're designing a package from the start. I think it's best to leave __init__.py files empty.
for example:
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What does inverse_of do? What SQL does it generate?
... through a relationship.
Their example:
class Dungeon < ActiveRecord::Base
has_many :traps, :inverse_of => :dungeon
has_one :evil_wizard, :inverse_of => :dungeon
end
class Trap < ActiveRecord::Base
belongs_to :dungeon, :inverse_of => :traps
end
class EvilWizard < ActiveRe...
What regular expression will match valid international phone numbers?
I need to determine whether a phone number is valid before attempting to dial it. The phone call can go anywhere in the world.
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How do I view the SQL generated by the Entity Framework?
How do I view the SQL generated by entity framework ?
22 Answers
22
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NPM - How to fix “No readme data”
I have a simple package.json:
6 Answers
6
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How to do math in a Django template?
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You can use the add filter:
{{ object.article.rating_score|add:"-100" }}
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Can I invoke an instance method on a Ruby module without including it?
I have a module which declares a number of instance methods
10 Answers
10
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Objective-C: Reading a file line by line
What is the appropriate way of dealing with large text files in Objective-C? Let's say I need to read each line separately and want to treat each line as an NSString. What is the most efficient way of doing this?
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What are the differences between type() and isinstance()?
What are the differences between these two code fragments?
7 Answers
7
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Which SQL query is faster? Filter on Join criteria or Where clause?
... WHERE clause. I have always felt that it is faster on the join criteria because it reduces the result set at the soonest possible moment, but I don't know for sure.
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