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Numpy matrix to array
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If you'd like something a bit more readable, you can do this:
A = np.squeeze(np.asarray(M))
Equivalently, you could also do: A = np.asarray(M).reshape(-1), but that's a bit less easy to read.
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Repair all tables in one go
...mand line you can use:
mysqlcheck -A --auto-repair
http://dev.mysql.com/doc/refman/5.0/en/mysqlcheck.html
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When to use next() and return next() in Node.js
... to ensure that the execution stops after triggering the callback.
If you don't do it, you risk triggering the callback a second time later, which usually has devastating results. Your code is fine as it is, but I would rewrite it as:
app.get('/users/:id?', function(req, res, next){
var id = r...
Mac OS X - EnvironmentError: mysql_config not found
...ld actually be called 'mysql_config5', and in this case, you would have to do this after installing: export PATH=$PATH:/opt/local/lib/mysql5/bin. You can find more details here.
Note1: I've seen some people saying that installing python-dev and libmysqlclient-dev also helped, however I do not know...
Using the HTML5 “required” attribute for a group of checkboxes?
... is clicked;
the browsers detects that the "required" field is empty and does not submit the form; instead browser shows a hint asking the user to type text into the field.
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Is there a WebSocket client implemented for Python? [closed]
...tp://pypi.python.org/pypi/websocket-client/
Ridiculously easy to use.
sudo pip install websocket-client
Sample client code:
#!/usr/bin/python
from websocket import create_connection
ws = create_connection("ws://localhost:8080/websocket")
print "Sending 'Hello, World'..."
ws.send("Hello, World...
In C#, how do I calculate someone's age based on a DateTime type birthday?
... Just wanted to comment on DateTime.Now performance. If you don't need an accurate time zone value, use DateTime.UtcNow it's much faster.
– JAG
Jan 22 '09 at 10:29
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How can I generate an MD5 hash?
... get a MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes).
Feed the MessageDigest one byte[] chunk at a time by calling md.update(bytes). When you're done adding input byt...
How do I invert BooleanToVisibilityConverter?
...e implementation is at
http://msdn.microsoft.com/en-us/library/system.windows.data.ivalueconverter.aspx
In your Convert method, have it return the values you'd like instead of the defaults.
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What is [Serializable] and when should I use it?
...What is it?
When you create an object in a .Net framework application, you don't need to think about how the data is stored in memory. Because the .Net Framework takes care of that for you. However, if you want to store the contents of an object to a file, send an object to another process or transm...