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Checking for empty queryset in Django
...uerySet anyway it's better to use:
if orgs:
...
For more information read QuerySet.exists() documentation.
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Programmatically change input type of the EditText from PASSWORD to NORMAL & vice versa
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Please read the question first. I want to toggle between password field and textfield. This will give me numeric textfield.
– Rajkiran
Nov 9 '12 at 3:40
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Reverse of JSON.stringify?
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I read the OP as saying "I converted a javascript object to a JSON string, and now I want to convert it back - how do I do it?" All the other answers say just use JSON.parse. I'm just warning that theres a lot of cases that wil...
C# Convert string from UTF-8 to ISO-8859-1 (Latin1) H
...e (iso-8859-1). And that is simply just not the case. I recommend that you read this excellent article by Joel spolsky.
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Generating a PNG with matplotlib when DISPLAY is undefined
...s. The solution for me was to add the following code in a place that gets read before any other pylab/matplotlib/pyplot import:
import matplotlib
# Force matplotlib to not use any Xwindows backend.
matplotlib.use('Agg')
The alternative is to set it in your .matplotlibrc
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How do I make a Mac Terminal pop-up/alert? Applescript?
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osascript -e 'tell app "System Events" to display dialog "Hello World"'
Read more on Mac OS X Hints.
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Spring MVC: How to return image in @ResponseBody?
....59/tmpFiles/1.jpg", "r");
byte[] b = new byte[(int)f.length()];
f.readFully(b);
final HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.IMAGE_PNG);
return new ResponseEntity<byte[]>(b, headers, HttpStatus.CREATED);
}
Worked For Me.
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Save An Image To Application Documents Folder From UIView On IOS
...ile name
[pngData writeToFile:filePath atomically:YES]; //Write the file
Reading it later works the same way. Build the path like we just did above, then:
NSData *pngData = [NSData dataWithContentsOfFile:filePath];
UIImage *image = [UIImage imageWithData:pngData];
What you'll probably want to d...
Fragment onResume() & onPause() is not called on backstack
...esume() or onPause() is called.
They are tightly coupled to the Activity.
Read the Handling the Fragment Lifecycle section of this article.
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System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
...arDate(zone);
setTimeInMillis(System.currentTimeMillis());
}
so it already automatically does what you suggest. Date's default constructor holds this:
public Date() {
this(System.currentTimeMillis());
}
So there really isn't need to get system time specifically unless you want to do som...