大约有 40,000 项符合查询结果（耗时：0.0609秒） [XML]
Change a column type from Date to DateTime during ROR migration
...
This answer is only partially correct, you can not use change_column inside change even on rails 4 or down migration will not work. You should use up/down no matter the version of rails.
– Alan Peabody
Jul 18 '1...
Best practice for partial updates in a RESTful service
...system and I am trying to find the best practice for updating records partially. For example, I want the caller to be able to read the full record with a GET request. But for updating it only certain operations on the record are allowed, like change the status from ENABLED to DISABLED. (I have more ...
The current SynchronizationContext may not be used as a TaskScheduler
I am using Tasks to run long running server calls in my ViewModel and the results are marshalled back on Dispatcher using TaskScheduler.FromSyncronizationContext() . For example:
...
What does the (unary) * operator do in this Ruby code?
...*[arg1, arg2, arg3]
It can also be used in a different context, to catch all remaining method arguments in a method definition. In that case, it does not expand, but combine:
def method2(*args) # args will hold Array of all arguments
end
Some more detailed information here.
...
Why C# implements methods as non-virtual by default?
...on in the class can be plugged out and replaced by another, which is not really a good thing. Many people even believe that classes should have been sealed by default.
virtual methods can also have a slight performance implication. This is not likely to be the primary reason, however.
...
How do I enable C++11 in gcc?
... program. Create a new file named Makefile (with a capital M). To automatically compile your code just type the make command in a terminal. You may have to install make.
Here's a simple one :
CXX=clang++
CXXFLAGS=-g -std=c++11 -Wall -pedantic
BIN=prog
SRC=$(wildcard *.cpp)
OBJ=$(SRC:%.cpp=%.o)
...
How does JavaFX compare to WPF? [closed]
...eeks. Here is a high level overview of how it compares to WPF in my eyes:
All of my comments are related to JavaFX 2.0. This information will probably be subject to change as the platform is still fairly immature and is being actively developed.
Graphics
Like WPF, JavaFX uses a retained graphics ...
How to accept Date params in a GET request to Spring MVC Controller?
...can I suggest that you use the Joda DateTime library. Spring supports it really well.
– Luciano
Mar 1 '13 at 19:06
The...
Fastest way to serialize and deserialize .NET objects
...it might be faster than a lot of other serializes out there, but is it actually fast, compared to manually parsing it? My god no.
– BjarkeCK
Jun 1 at 10:32
...
Why are there two ways to unstage a file in Git?
...
git rm --cached <filePath> does not unstage a file, it actually stages the removal of the file(s) from the repo (assuming it was already committed before) but leaves the file in your working tree (leaving you with an untracked file).
git reset -- <filePath> will unstage any st...