大约有 42,000 项符合查询结果（耗时：0.0804秒） [XML]
Where to use EJB 3.1 and CDI?
...synchronous method invocation. Starting threads is a no-no in any server-side environment. Having too many threads is a serious performance killer. This annotation allows you to parallelize things you do using the container's thread pool. This is awesome.
Available to @Stateful, @Stateless an...
C# Equivalent of SQL Server DataTypes
...ne
ntext None None
uniqueidentifier SqlGuid Guid
rowversion None Byte[]
bit SqlBoolean Boolean
tinyint ...
What are “Groovy” and “Grails” and what kinds of applications are built using them?
...he existing DB architecture is simple? Could the cumbersome workflow be avoided by migrating the data in the legacy DB to a new DB, and if so would this be hard to do? Thanks.
– Daniel
Apr 8 '15 at 4:41
...
When would I use Task.Yield()?
...od that requires some "long running" initialization, ie:
private async void button_Click(object sender, EventArgs e)
{
await Task.Yield(); // Make us async right away
var data = ExecuteFooOnUIThread(); // This will run on the UI thread at some point later
await UseDataAsync(da...
Where is Python's sys.path initialized from?
...ly set sys.path. How it is
set can get really complicated. The following guide is a watered-down,
somewhat-incomplete, somewhat-wrong, but hopefully-useful guide
for the rank-and-file python programmer of what happens when python
figures out what to use as the initial values of sys.path,
sys.executa...
Draw radius around a point in Google map
...rker, meaning a circle that behaves appropriately while zooming. I have no idea how to do that and it seems it's not something common.
...
How do I insert datetime value into a SQLite database?
...
You should consider answer the question, with links that support your answer, not just a bunch of links
– Gonzalo.-
Sep 14 '12 at 19:16
...
What are the advantages of NumPy over regular Python lists?
... of vector and matrix operations for free, which sometimes allow one to avoid unnecessary work. And they are also efficiently implemented.
For example, you could read your cube directly from a file into an array:
x = numpy.fromfile(file=open("data"), dtype=float).reshape((100, 100, 100))
Sum alo...
Why are Objective-C delegates usually given the property assign instead of retain?
...
The reason that you avoid retaining delegates is that you need to avoid a retain cycle:
A creates B
A sets itself as B's delegate
…
A is released by its owner
If B had retained A, A wouldn't be released, as B owns A, thus A's dealloc would neve...
how do you push only some of your local git commits?
...ster
If you are making a habit of this type of work flow, you should consider doing your work in a separate branch. Then you could do something like:
$ git checkout master
$ git merge working~3
$ git push origin master:master
Note that the "origin master:master" part is probably optional for yo...