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Applying function with multiple arguments to create a new pandas column
...f = pd.DataFrame({"A": [10,20,30], "B": [20, 30, 10]})
>>> df['new_column'] = np.multiply(df['A'], df['B'])
>>> df
A B new_column
0 10 20 200
1 20 30 600
2 30 10 300
or vectorize arbitrary function in general case:
>>> def fx(x, y):
...
Convert char to int in C and C++
...fuse everyone who tries to learn the language. A better name for it is int8_t, and you can use that name instead, if your compiler follows the latest C standard.
Though of course you should use the char type when doing string handling, because the index of the classic ASCII table fits in 1 byte. Yo...
A regex to match a substring that isn't followed by a certain other substring
...-------------
\w+ word characters (a-z, A-Z, 0-9, _) (1 or
more times (matching the most amount
possible))
--------------------------------------------------------------------------------
) en...
How to pass “Null” (a real surname!) to a SOAP web service in ActionScript 3
...ered Jan 16 '11 at 8:13
uncaught_exceptionsuncaught_exceptions
19.8k44 gold badges3636 silver badges4848 bronze badges
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Rebasing remote branches in Git
...
@r_: Please read my answer. It might help you in your understanding of what you're doing :)
– ralphtheninja
Jun 1 '11 at 19:28
...
Why is IntelliJ 13 IDEA so slow after upgrading from version 12?
... -XX:MaxPermSize=1024m didn't worked for me.
– coding_idiot
Jul 24 '14 at 18:39
2
In that case, H...
Why doesn't C have unsigned floats?
...e? -8. But what would that mean in a system without negative numbers. FLOAT_MAX - 8 perhaps? Actually, that doesn't work as FLOAT_MAX - 8 is FLOAT_MAX due to precision effects so things are even more screwy. What if it was part of a more complex expression:
float a = 2.0f, b = 10.0f, c = 20.0f, d =...
Connection timeout for SQL server
...ing.
Here is the code sample:
var sscsb = new SqlConnectionStringBuilder(_dbFactory.Database.ConnectionString);
sscsb.ConnectTimeout = 30;
var conn = new SqlConnection(sscsb.ConnectionString);
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...
Is Safari on iOS 6 caching $.ajax results?
..."no-cache" just to POSTs if you wish like this in Apache:
SetEnvIf Request_Method "POST" IS_POST
Header set Cache-Control "no-cache" env=IS_POST
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Set Colorbar Range in matplotlib
..., .75, .75), (1., 0.45, 0.45))
}
cm = m.colors.LinearSegmentedColormap('my_colormap', cdict, 1024)
x = np.arange(0, 10, .1)
y = np.arange(0, 10, .1)
X, Y = np.meshgrid(x,y)
data = 2*( np.sin(X) + np.sin(3*Y) )
def do_plot(n, f, title):
#plt.clf()
plt.subplot(1, 3, n)
plt.pcolor(X, Y,...