大约有 19,600 项符合查询结果（耗时：0.0338秒） [XML]
How to create Temp table with SELECT * INTO tempTable FROM CTE Query
...
How long is available the temporary table in the data base after execution if i not remove it using drop table in my code? because i twice execute the code select * into #temp but, the second time the execution deliver a error : "The table #temp already exists in data base".
...
Differences between TCP sockets and web sockets, one more time [duplicate]
...the entire message that the other side sent.
Note that you can do message based communication using TCP sockets, but you need some extra layer/encapsulation that is adding framing/message boundary data to the messages so that the original messages can be re-assembled from the pieces. In fact, WebSo...
Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
...
Based on KitKat docs (developer.android.com/about/versions/…) this may not be what the OP needs unless he does intent to use/edit documents that are owned by the other application(s). If the OP wants a copy or to do things...
How to install multiple python packages at once using pip
...files for their general layout and syntax - note that you can generate one based on current environment / site-packages with pip freeze if you want a quick example - e.g. (based on having installed wsgiref and boto in a clean virtualenv):
$ pip freeze
boto==2.3.0
wsgiref==0.1.2
...
How to make the first option of selected with jQuery
...
It works, but it's based on 1st element value, if 1st element contains empty value, it will select nearest element WITH value
– evilReiko
Mar 1 '11 at 12:37
...
What is a Manifest in Scala and when do you need it?
...tail.
One common use of Manifests is to have your code behave differently based on the static type of a collection. For example, what if you wanted to treat a List[String] differently from other types of a List:
def foo[T](x: List[T])(implicit m: Manifest[T]) = {
if (m <:< manifest[Str...
Format Float to n decimal places
... rounding is going to be chaotic and unpredictable any time you mix binary-based floating-point values with base-10 arithmetic. I'm pretty sure it cannot be done. The basic problem is that a value like 1.105 cannot be represented exactly in floating point. The floating point value is going to be som...
In absence of preprocessor macros, is there a way to define practical scheme specific flags at proje
...nd keep them up to date for different targets etc. Also, in our mixed codebase, we didn't want to make remember to set our flags appropriately all the time for each language.
For ours, we declared a file in ObjC
PreProcessorMacros.h
extern BOOL const DEBUG_BUILD;
In the .m
PreProcessorMacros....
Good examples of MVVM Template
...pproach, which is not quite classic MVVM, can be summarized as follows:
A base class for a dialog ViewModel that exposes commands for commit and cancel actions, an event to lets the view know that a dialog is ready to be closed, and whatever else you will need in all of your dialogs.
A generic vi...
ES6 class variable alternatives
...eally have classes. Even with ES6 we're looking at an object- or prototype-based language rather than a class-based language. In any function X () {}, X.prototype.constructor points back to X.
When the new operator is used on X, a new object is created inheriting X.prototype. Any undefined properti...