大约有 45,000 项符合查询结果（耗时：0.0892秒） [XML]
android asynctask sending callbacks to ui [duplicate]
...}
EDIT
Since this answer got quite popular, I want to add some things.
If you're a new to Android development, AsyncTask is a fast way to make things work without blocking UI thread. It does solves some problems indeed, there is nothing wrong with how the class works itself. However, it brings s...
Recursion or Iteration?
Is there a performance hit if we use a loop instead of recursion or vice versa in algorithms where both can serve the same purpose? Eg: Check if the given string is a palindrome.
I have seen many programmers using recursion as a means to show off when a simple iteration algorithm can fit the bill.
D...
Best GWT widget library? [closed]
...c) and incorporate it to your project. Try to use extended components ONLY if you don't see a way to do it with vanilla GWT. This way you don't tie yourself to these libraries which are ALWAYS a pain when you try to do something that doesn't appear in the demo application, contain many bugs and thei...
Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
...
You need to specify data, index and columns to DataFrame constructor, as in:
>>> pd.DataFrame(data=data[1:,1:], # values
... index=data[1:,0], # 1st column as index
... columns=data[0,1:]) # 1st row...
Inserting a Python datetime.datetime object into MySQL
... the TypeError because you need quotes around the datecolumn value.
Try:
now = datetime.datetime(2009, 5, 5)
cursor.execute("INSERT INTO table (name, id, datecolumn) VALUES (%s, %s, '%s')",
("name", 4, now))
With regards to the format, I had success with the above command (which ...
UIActivityViewController crashing on iOS 8 iPads
...er using the new UIPopoverPresentationController, it requires that you specify an anchor point for the presentation of the popover using one of the three following properties:
barButtonItem
sourceView
sourceRect
In order to specify the anchor point you will need to obtain a reference to the UIAc...
psql: FATAL: database “” does not exist
...you by the database. Try this at a shell prompt:
createdb
and then see if you can log in again with
psql -h localhost
This will simply create a database for your login user, which I think is what you are looking for. If createdb fails, then you don't have enough rights to make your own data...
How to subtract 30 days from the current datetime in mysql?
...
SELECT * FROM table
WHERE exec_datetime BETWEEN DATE_SUB(NOW(), INTERVAL 30 DAY) AND NOW();
http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_date-add
share
|
...
Error - Unable to access the IIS metabase
...
If you want to avoid the pain of running your visual studio as administrator every time (which IMHO is a better solution) then check the response by GordonK2004.
– Aidin
Nov 11 '13 at 21...
JavaScript equivalent to printf/String.Format
...nt of the C/PHP printf() or for C#/Java programmers, String.Format() ( IFormatProvider for .NET).
50 Answers
...