大约有 45,000 项符合查询结果（耗时：0.0649秒） [XML]
How to “test” NoneType in python?
...value. So how can I question a variable that is a NoneType? I need to use if method, for example
7 Answers
...
How can I open a URL in Android's web browser from my application?
...ne for me.
As for the missing "http://" I'd just do something like this:
if (!url.startsWith("http://") && !url.startsWith("https://"))
url = "http://" + url;
I would also probably pre-populate your EditText that the user is typing a URL in with "http://".
...
How to keep onItemSelected from firing off on a newly instantiated Spinner?
...ected your solution to work -- I though the selection event would not fire if you set the adapter before setting up the listener.
That being said, a simple boolean flag would allow you to detect the rogue first selection event and ignore it.
...
Create thumbnail image
...s in the System.Drawing namespace (in System.Drawing.dll).
Behavior:
If the Image contains an embedded thumbnail image, this method
retrieves the embedded thumbnail and scales it to the requested size.
If the Image does not contain an embedded thumbnail image, this method
creates a thumb...
Compare floats in php
...
If you do it like this they should be the same. But note that a characteristic of floating-point values is that calculations which seem to result in the same value do not need to actually be identical. So if $a is a literal ....
Is there a way to check if WPF is currently executing in design mode or not?
...e know of some global state variable that is available so that I can check if the code is currently executing in design mode (e.g. in Blend or Visual Studio) or not?
...
How do I perform an IF…THEN in an SQL SELECT?
How do I perform an IF...THEN in an SQL SELECT statement?
30 Answers
30
...
How can I programmatically create a new cron job?
...n it already exists is bad.
Remove the crontab line. Perhaps only warning if it didn't exist.
A combination of the above two features to replace the crontab line.
share
|
improve this answer
...
How to return a result from a VBA function
...
test = 1
End Function
Example usage:
Dim i As Integer
i = test()
If the function returns an Object type, then you must use the Set keyword like this:
Public Function testRange() As Range
Set testRange = Range("A1")
End Function
Example usage:
Dim r As Range
Set r = testRange()
No...
Using String Format to show decimal up to 2 places or simple integer
....99 or 100.9, What I want is to display the price in 2 decimal places only if the decimals are entered for that price , for instance if its 100 so it should only show 100 not 100.00 and if the price is 100.2 it should display 100.20 similarly for 100.22 should be same .
I googled and came across som...