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Why .NET String is immutable? [duplicate]
...ample, if you were implementing list which was backed by an array, a start index and a count, then the most expensive part of creating a sub-range would be copying the objects. However, if it was immutable then the sub-range object could reference the same array, with only the start index and count ...
Insert a commit before the root commit in Git?
...st create a commit directly, which avoids touching the working copy or the index or which branch is checked out, etc.
Create a tree object for an empty directory:
tree=`git hash-object -wt tree --stdin < /dev/null`
Wrap a commit around it:
commit=`git commit-tree -m 'root commit' $tree`
Cre...
Creating an API for mobile applications - Authentication and Authorization
...fits my criteria (however my criteria my be misguided so feel free to critique that as well). Additionally, I want the API to be the same for all platforms/applications consuming it.
...
How to sort a dataframe by multiple column(s)
... 1
Edit some 2+ years later: It was just asked how to do this by column index. The answer is to simply pass the desired sorting column(s) to the order() function:
R> dd[order(-dd[,4], dd[,1]), ]
b x y z
4 Low C 9 2
2 Med D 3 1
1 Hi A 8 1
3 Hi A 9 1
R>
rather than using the name of...
How does a garbage collector avoid an infinite loop here?
...nown>:0
at System.IO.StreamWriter.Write (System.Char[] buffer, Int32 index, Int32 count) [0x00000] in <filename unknown>:0
at System.IO.CStreamWriter.Write (System.Char[] buffer, Int32 index, Int32 count) [0x00000] in <filename unknown>:0
at System.IO.CStreamWriter.Write (Sys...
Using :before CSS pseudo element to add image to modal
I have a CSS class Modal which is absolutely positioned, z-indexed above it's parent, and nicely positioned with JQuery. I want to add a caret image (^) to the top of the modal box and was looking at using the :before CSS pseudo selector to do this cleanly.
...
How to save username and password with Mercurial?
...h-out/14269997#14269997
http://www.linuxquestions.org/questions/showthread.php?p=4867412#post4867412
https://stackoverflow.com/questions/12503421/hg-push-error-and-username-not-specified-in-hg-hgrc-keyring-will-not-be-used/14270602#14270602
OpenSUSE Apache - Windows LDAP - group user authentication...
How to delete a word and go into insert mode in Vim?
...ered Sep 7 '09 at 4:50
too much phptoo much php
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How does a Java HashMap handle different objects with the same hash code?
...mp; put
Time complexity is O(1), because:
Bucket is accessed via array index, thus O(1).
Linked list in each bucket is of small length, thus could view as O(1).
Tree size is also limited, because will extend capacity & re-hash when element count increase, so could view it as O(1), not O(log ...
How to get the result of OnPostExecute() to main activity because AsyncTask is a separate class?
...g receivedData = new AsyncTask().execute("http://yourdomain.com/yourscript.php").get();
}
catch (ExecutionException | InterruptedException ei) {
ei.printStackTrace();
}
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