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How to check if an array value exists?
How can I check if $something['say'] has the value of 'bla' or 'omg' ?
12 Answers
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How to iterate through two lists in parallel?
I have two iterables in Python, and I want to go over them in pairs:
8 Answers
8
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Different bash prompt for different vi editing mode?
When using vi mode (set -o vi) with Bash, it would be nice to have a prompt that depends on the mode you are currently in (insert or command). How does one find out this editing mode?
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Fast check for NaN in NumPy
I'm looking for the fastest way to check for the occurrence of NaN ( np.nan ) in a NumPy array X . np.isnan(X) is out of the question, since it builds a boolean array of shape X.shape , which is potentially gigantic.
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Check if value exists in Postgres array
Using Postgres 9.0, I need a way to test if a value exists in a given array. So far I came up with something like this:
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How to iterate over rows in a DataFrame in Pandas
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DataFrame.iterrows is a generator which yields both the index and row (as a Series):
import pandas as pd
import numpy as np
df = pd.DataFrame({'c1': [10, 11, 12], 'c2': [100, 110, 120]})
for index, row in df.iterrows():
print(row['c1'], row['c2'])
10 100
11 110
12 120
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How do I test if a variable is a number in Bash?
...: Not a number" >&2; exit 1
fi
If the value is not necessarily an integer, consider amending the regex appropriately; for instance:
^[0-9]+([.][0-9]+)?$
...or, to handle numbers with a sign:
^[+-]?[0-9]+([.][0-9]+)?$
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
I'm having a hard time wrapping my brain around PEP 380 .
8 Answers
8
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Change bundle identifier in Xcode when submitting my first app in IOS
I'm trying to submit my first app in iOS . I have entered iOS Provisioning Portal and I am about to create an app ID.
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Determine Whether Integer Is Between Two Other Integers?
How do I determine whether a given integer is between two other integers (e.g. greater than/equal to 10000 and less than/equal to 30000 )?
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