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How to define two fields “unique” as couple
...ber', max_length=100)
comments = models.TextField('Comments', max_length=4000, blank=True)
class Meta:
unique_together = ('journal_id', 'volume_number',)
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How to get first N elements of a list in C#?
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How can I check if the current date/time is past a set date/time?
...script that will check if the current date/time is past the 05/15/2010 at 4PM
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How do I retrieve the number of columns in a Pandas data frame?
...so:
import pandas as pd
df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]})
len(df.columns)
3
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Plot logarithmic axes with matplotlib in python
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404
You can use the Axes.set_yscale method. That allows you to change the scale after the Axes obj...
How to list of all the tables defined for the database when using active record?
...ere:
activerecord/lib/active_record/connection_adapters/mysql_adapter.rb:412
activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb:615
activerecord/lib/active_record/connection_adapters/sqlite_adapter.rb:176
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How to fix the aspect ratio in ggplot?
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answered Aug 14 '11 at 15:26
AndrieAndrie
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Plot a bar using matplotlib using a dictionary
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You can do it in two lines by first plotting the bar chart and then setting the appropriate tick...
LD_LIBRARY_PATH vs LIBRARY_PATH
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answered Nov 22 '10 at 22:09
NaveenNaveen
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