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Immutability of Strings in Java
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319
str is not an object, it's a reference to an object. "Hello" and "Help!" are two distinct Stri...
How to open link in new tab on html?
...ferrer">Link</a>
Edit: for other examples, see here: http://www.w3schools.com/tags/att_a_target.asp
(Note: I previously suggested blank instead of _blank because, if used, it'll open a new tab and then use the same tab if the link is clicked again. However, this is only because, as GolezTr...
float64 with pandas to_csv
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163
As mentioned in the comments, it is a general floating point problem.
However you can use the f...
Can I load a UIImage from a URL?
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319
You can do it this way (synchronously, but compact):
UIImage *image = [UIImage imageWithData:...
“where 1=1” statement [duplicate]
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It's usually when folks build up SQL statements.
When you add and value = "Toyota" you don't ...
What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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This error message means that you are attempting to use Python 3 to follow an example or run a program that uses the Python 2 print statement:
print "Hello, World!"
The statement above does not work in Python 3. In Python 3 you need to add parentheses around the value to be printe...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
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As Sven mentioned, x[[[0],[2]],[1,3]] will give back the 0 and 2 rows that match with the 1 and 3 columns while x[[0,2],[1,3]] will return the values x[0,1] and x[2,3] in an array.
There is a helpful function for doing the first example I gave, numpy.ix_. Y...
How do I find which program is using port 80 in Windows? [duplicate]
...utput for your program.
BTW, Skype by default tries to use ports 80 and 443 for incoming connections.
You can also run netstat -anb >%USERPROFILE%\ports.txt followed by start %USERPROFILE%\ports.txt to open the port and process list in a text editor, where you can search for the information you...
How to get the first column of a pandas DataFrame as a Series?
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>>> import pandas as pd
>>> df = pd.DataFrame({'x' : [1, 2, 3, 4], 'y' : [4, 5...
Does Python have “private” variables in classes?
I'm coming from the Java world and reading Bruce Eckels' Python 3 Patterns, Recipes and Idioms .
12 Answers
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