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How can we prepend strings with StringBuilder?
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If you require high performance with lots of prepends, you'll need to write your own version of StringBuilder (or use someone else's). With the standard StringBuilder (although technically it could be implemented differently)...
Android RelativeLayout programmatically Set “centerInParent”
...oid:configChanges="orientation|screenSize" inside your activity in your manifest
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Ruby: How to get the first character of a string
...1]
end
end
will allow you to use the initial method on any string. So if you have the following variables:
last_name = "Smith"
first_name = "John"
Then you can get the initials very cleanly and readably:
puts first_name.initial # prints J
puts last_name.initial # prints S
The other m...
Git On Custom SSH Port
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:-) If you ask me, the git URL syntax is unclean, and the above is more normalized
– Christo
Apr 24 '11 at 11:58
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How can I convert an image into a Base64 string?
...); // bm is the bitmap object
byte[] b = baos.toByteArray();
* Update *
If you're using an older SDK library (because you want it to work on phones with older versions of the OS) you won't have the Base64 class packaged in (since it just came out in API level 8 AKA version 2.2).
Check this artic...
How to get the current user in ASP.NET MVC
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If you need to get the user from within the controller, use the User property of Controller. If you need it from the view, I would populate what you specifically need in the ViewData, or you could just call User as I think it...
Shortcut to open file in Vim
I want to open a file in Vim like in Eclipse using Ctrl + Shift + R , or via the Ctrl + N option of autofill. Invoke a keyboard shortcut, type the file name/pattern, and choose from all the matching files names.
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Insert a string at a specific index
How can I insert a string at a specific index of another string?
18 Answers
18
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Clean ways to write multiple 'for' loops
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The first thing is that you don't use such a data structure. If
you need a three dimensional matrix, you define one:
class Matrix3D
{
int x;
int y;
int z;
std::vector<int> myData;
public:
// ...
int& operator()( int i, int j, int k )
{
re...
How to get the Android device's primary e-mail address
...up-front to the user when dealing with account, profile, and contact data. If you misuse a user's email address or other personal information, bad things can happen.
Method A: Use AccountManager (API level 5+)
You can use AccountManager.getAccounts or AccountManager.getAccountsByType to get a list...