大约有 41,000 项符合查询结果（耗时：0.0537秒） [XML]
How do I dump the data of some SQLite3 tables?
How do I dump the data, and only the data, not the schema, of some SQLite3 tables of a database (not all the tables)?
The dump should be in SQL format, as it should be easily re-entered into the database later and should be done from the command line. Something like
...
When using Spring Security, what is the proper way to obtain current username (i.e. SecurityContext)
I have a Spring MVC web app which uses Spring Security. I want to know the username of the currently logged in user. I'm using the code snippet given below . Is this the accepted way?
...
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
Using the HTML5 <canvas> element, I would like to load an image file (PNG, JPEG, etc.), draw it to the canvas completely transparently, and then fade it in. I have figured out how to load the image and draw it to the canvas, but I don't know how to change its opacity once it as been drawn.
...
Regex group capture in R with multiple capture-groups
In R, is it possible to extract group capture from a regular expression match? As far as I can tell, none of grep , grepl , regexpr , gregexpr , sub , or gsub return the group captures.
...
Confused about Service vs Factory
As I understand it, when inside a factory I return an object that gets injected into a controller. When inside a service I am dealing with the object using this and not returning anything.
...
What does yield mean in PHP?
I've recently stumbled over this code:
8 Answers
8
...
JPA getSingleResult() or null
I have an insertOrUpdate method which inserts an Entity when it doesn't exist or update it if it does. To enable this, I have to findByIdAndForeignKey , if it returned null insert if not then update. The problem is how do I check if it exists? So I tried getSingleResult . But it throws an ex...
Ways to synchronize interface and implementation comments in C# [closed]
Are there automatic ways to sync comments between an interface and its implementation?
I'm currently documenting them both and wouldn't like to manually keep them in sync.
...
Optimum way to compare strings in JavaScript? [duplicate]
I am trying to optimize a function which does binary search of strings in JavaScript.
3 Answers
...
How do I get the computer name in .NET
How do I get the computer name in .NET c#
11 Answers
11
...