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Extending the User model with custom fields in Django
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What is the best way to tell if a character is a letter or number in Java without using regexes?
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251
Character.isDigit(string.charAt(index)) (JavaDoc) will return true if it's a digit
Character.i...
Why is creating a Thread said to be expensive?
...eports a thread creation rate of ~4000 per second on a Sun Java 1.4.1 on a 2002 vintage dual processor Xeon running 2002 vintage Linux. A more modern platform will give better numbers ... and I can't comment on the methodology ... but at least it gives a ballpark for how expensive thread creation i...
Where is the Java SDK folder in my computer? Ubuntu 12.04
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327
WAY-1 : Updated for the shortest and easy way
Below command will give you the path, But it...
How can I import a database with MySQL from terminal?
...le:
mysql -u root -p wp_users < wp_users.sql
mysql -u root -pPassword123 wp_users < wp_users.sql
See also:
4.5.1.5. Executing SQL Statements from a Text File
Note: If you are on windows then you will have to cd (change directory) to your MySQL/bin directory inside the CMD before execu...
How to test if a string is basically an integer in quotes using Ruby
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How to add an empty column to a dataframe?
...p
>>> import pandas as pd
>>> df = pd.DataFrame({"A": [1,2,3], "B": [2,3,4]})
>>> df
A B
0 1 2
1 2 3
2 3 4
>>> df["C"] = ""
>>> df["D"] = np.nan
>>> df
A B C D
0 1 2 NaN
1 2 3 NaN
2 3 4 NaN
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'too many values to unpack', iterating over a dict. key=>string, value=>list
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Python 2
You need to use something like iteritems.
for field, possible_values in fields.iteritems():
print field, possible_values
See this answer for more information on iterating through dictionaries, such as using items(), ac...
How do I convert from int to Long in Java?
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