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Global variables in Java
... public static int a;
public static int b;
}
now you can access a and b from anywhere
by calling
Example.a;
Example.b;
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How to pass a URI to an intent?
...re the uri as string
intent.putExtra("imageUri", imageUri.toString());
and then just convert the string back to uri like this
Uri myUri = Uri.parse(extras.getString("imageUri"));
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Windows recursive grep command-line
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findstr can do recursive searches (/S) and supports some variant of regex syntax (/R).
C:\>findstr /?
Searches for strings in files.
FINDSTR [/B] [/E] [/L] [/R] [/S] [/I] [/X] [/V] [/N] [/M] [/O] [/P] [/F:file]
[/C:string] [/G:file] [/D:dir list] [/A...
asynchronous vs non-blocking
What is the difference between asynchronous and non-blocking calls? Also between blocking and synchronous calls (with examples please)?
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How do you run a single test/spec file in RSpec?
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Or you can skip rake and use the 'rspec' command:
rspec path/to/spec/file.rb
In your case I think as long as your ./spec/db_spec.rb file includes the appropriate helpers, it should work fine.
If you're using an older version of rspec it is:
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Can I have onScrollListener for a ScrollView?
I am using a HorizontalScrollView in a layout and I need to identify the user have reached the start and end point of the scroll.
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Deleting multiple elements from a list
...ents from a list at the same time? If I want to delete elements at index 0 and 2, and try something like del somelist[0] , followed by del somelist[2] , the second statement will actually delete somelist[3] .
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Assign null to a SqlParameter
...operator that explains the problem
Either the type of first_expression and second_expression must be the same, or an implicit conversion must exist from one type to the other.
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How do I resize an image using PIL and maintain its aspect ratio?
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Like it says, the example was from the pil documentation, and that example (still) doesn't use the antialias flag. Since it's probably what most people would want, though, I added it.
– gnud
Dec 8 '11 at 8:29
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How do I find the .NET version?
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Just type any one of the below commands to give you the latest version in the first line.
1. CSC
2. GACUTIL /l ?
3. CLRVER
You can only run these from the Visual Studio Command prompt if you have Visual Studio installed, or else if you have the .NET framewo...