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How do I fix PyDev “Undefined variable from import” errors?
...art Eclipse, do Project>Pydev>Remove error markers, and numpy should now appear in the Forced builtins.
– smci
Nov 1 '17 at 16:43
...
How do I disable orientation change on Android?
...in 2009 when I first answered the question and it really isn't a good idea now. See this answer by hackbod for reasons:
Avoid reloading activity with asynctask on orientation change in android
Add android:configChanges="keyboardHidden|orientation" to your AndroidManifest.xml. This tells the syste...
Trying to mock datetime.date.today(), but not working
...f today(cls):
return cls(2010, 1, 1)
datetime.date = NewDate
And now you could do:
>>> datetime.date.today()
NewDate(2010, 1, 1)
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Cross-thread operation not valid: Control accessed from a thread other than the thread it was create
...Contrl1_LOadDataMethod()
{
if(textbox1.text=="MyName") //<<======Now it wont give exception**
{
//Load data correspondin to "MyName"
//Populate a globale variable List<string> which will be
//bound to grid at some later stage
if(InvokeRequired)
...
MySQL SELECT only not null values
...uld use IS NOT NULL. (The comparison operators = and <> both give UNKNOWN with NULL on either side of the expression.)
SELECT *
FROM table
WHERE YourColumn IS NOT NULL;
Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not sta...
PHP method chaining?
...
@alex: I don't have PHP 4 to test with right now, but I'm pretty sure not.
– BoltClock♦
Sep 16 '10 at 6:23
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Scrolling child div scrolls the window, how do I stop that?
...er scroll wheels disappear and reappear based on the user moving the mouse now, so the above comment is problem no longer an issue.
– Keith Holliday
Oct 16 '15 at 3:42
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How to get notified about changes of the history via history.pushState?
So now that HTML5 introduces history.pushState to change the browsers history, websites start using this in combination with Ajax instead of changing the fragment identifier of the URL.
...
How can I get a count of the total number of digits in a number?
...t is still slow for Platform = x86 (I could not find the reason why, until now).
The STRING method is consistently slow: it greedily allocates too much memory for nothing. Interestingly, in .NET Core, string allocation seems to be much faster than in .NET Framework. Good to know.
The IF-CHAIN meth...
How do you serialize a model instance in Django?
... assuming obj is your model instance
dict_obj = model_to_dict( obj )
You now just need one straight json.dumps call to serialize it to json:
import json
serialized = json.dumps(dict_obj)
That's it! :)
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