大约有 24,971 项符合查询结果(耗时:0.0505秒) [XML]
sqlite database default time value 'now'
Is it possible in a sqlite database to craete a table that has a timestamp column that default to DATETIME('now') ?
7 Ans...
What is data oriented design?
I was reading this article , and this guy goes on talking about how everyone can greatly benefit from mixing in data oriented design with OOP. He doesn't show any code samples, however.
...
Git Cherry-pick vs Merge Workflow
Assuming I am the maintainer of a repo, and I want to pull in changes from a contributor, there are a few possible workflows:
...
conditional unique constraint
I have a situation where i need to enforce a unique constraint on a set of columns, but only for one value of a column.
6 A...
When to use , tag files, composite components and/or custom components?
I started using JSF 2.0 with Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x.
...
How can bcrypt have built-in salts?
Coda Hale's article "How To Safely Store a Password" claims that:
4 Answers
4
...
val-mutable versus var-immutable in Scala
Are there any guidelines in Scala on when to use val with a mutable collection versus using var with an immutable collection? Or should you really aim for val with an immutable collection?
...
“Add unimplemented methods” feature in the Android Studio
In the Eclipse IDE there is a great feature allows you to add (implement) all of the required methods of the particular class. I'm looking for this feature in the Android Studio IDE, but without success so far. Is there something similar? For me it is one of the key-features and can't live without.
...
_DEBUG vs NDEBUG
Which preprocessor define should be used to specify debug sections of code?
6 Answers
...
Can PostgreSQL index array columns?
I can't find a definite answer to this question in the documentation. If a column is an array type, will all the entered values be individually indexed?
...