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How to implement the activity stream in a social network
... If there is multiple source of activity (add, comment, like, etc.), how do you join this table with actual activities? Do you use multiple left join (each for an activity table)?
– Ali Shakiba
Jan 14 '11 at 22:54
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read complete file without using loop in java
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If the file is small, you can read the whole data once:
File file = new File("a.txt");
FileInputStream fis = new FileInputStream(file);
byte[] data = new byte[(int) file.length()];
fis.read(data);
fis.close();
String str = new String(data, ...
Correct way to write line to file?
...ing files opened in text mode (the default); use a single '\n' instead, on all platforms.
Some useful reading:
The with statement
open()
'a' is for append, or use
'w' to write with truncation
os (particularly os.linesep)
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How to get the last N records in mongodb?
...need to sort in ascending order.
Assuming you have some id or date field called "x" you would do ...
.sort()
db.foo.find().sort({x:1});
The 1 will sort ascending (oldest to newest) and -1 will sort descending (newest to oldest.)
If you use the auto created _id field it has a date embedded in...
Assign a variable inside a Block to a variable outside a Block
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You need to use this line of code to resolve your problem:
__block Person *aPerson = nil;
For more details, please refer to this tutorial: Blocks and Variables
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What is the { get; set; } syntax in C#?
I am learning ASP.NET MVC and I can read English documents, but I don't really understand what is happening in this code:
1...
How to do an instanceof check with Scala(Test)
I'm trying to incorporate ScalaTest into my Java project; replacing all JUnit tests with ScalaTests. At one point, I want to check if Guice's Injector injects the correct type. In Java, I have a test like this:
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Can I redirect the stdout in python into some sort of string buffer?
...ngIO import StringIO # Python3 use: from io import StringIO
import sys
old_stdout = sys.stdout
sys.stdout = mystdout = StringIO()
# blah blah lots of code ...
sys.stdout = old_stdout
# examine mystdout.getvalue()
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Java regex email
First of all, I know that using regex for email is not recommended but I gotta test this out.
20 Answers
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How does TransactionScope roll back transactions?
...and modifies it if it needs to based on the model (requires, requires new, etc, etc). The transaction simply notifies anything that enlists with it, not just database connections.
– casperOne
Jan 30 '09 at 16:26
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