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Renaming columns in pandas
...ame is specified. See v0.25 rename() docs.
REASSIGN COLUMN HEADERS
Use df.set_axis() with axis=1 and inplace=False (to return a copy).
df2 = df.set_axis(['V', 'W', 'X', 'Y', 'Z'], axis=1, inplace=False)
df2
V W X Y Z
0 x x x x x
1 x x x x x
2 x x x x x
This returns a copy, b...
Automatic exit from bash shell script on error [duplicate]
...
Use the set -e builtin:
#!/bin/bash
set -e
# Any subsequent(*) commands which fail will cause the shell script to exit immediately
Alternatively, you can pass -e on the command line:
bash -e my_script.sh
You can also disable th...
How to check if a table contains an element in Lua?
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You can put the values as the table's keys. For example:
function addToSet(set, key)
set[key] = true
end
function removeFromSet(set, key)
set[key] = nil
end
function setContains(set, key)
return set[key] ~= nil
end
There's a more fully-featured example here.
...
How to create a custom attribute in C#
...1}\" must always have \"{4}\" characters.")]
public string Code { get; set; }
From the snippet above, one might guess that the code will always be validated, whenever changed, accordingly to the rules of the Validator (in the example, have at least 8 characters and at most 8 characters). But t...
What's the most efficient way to erase duplicates and sort a vector?
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I agree with R. Pate and Todd Gardner; a std::set might be a good idea here. Even if you're stuck using vectors, if you have enough duplicates, you might be better off creating a set to do the dirty work.
Let's compare three approaches:
Just using vector, sort + uniqu...
How do I configure Notepad++ to use spaces instead of tabs?
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Go to the Preferences menu command under menu Settings, and select Language Menu/Tab Settings, depending on your version. Earlier versions use Tab Settings. Later versions use Language. Click the Replace with space check box. Set the size to 4.
See documentation: http...
Setting href attribute at runtime
What is the best way to set the href attribute of the <a> tag at run time using jQuery?
5 Answers
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How to detect READ_COMMITTED_SNAPSHOT is enabled?
...er is there a way to detect whether a database has had its isolation level set via the T-SQL command ALTER DATABASE <database> SET READ_COMMITTED_SNAPSHOT ON;
...
How to read and write INI file with Python3?
...l = config.getfloat('section_a', 'pi_val')
# update existing value
config.set('section_a', 'string_val', 'world')
# add a new section and some values
config.add_section('section_b')
config.set('section_b', 'meal_val', 'spam')
config.set('section_b', 'not_found_val', '404')
# save to a file
with o...
Is it possible to set private property via reflection?
Can I set a private property via reflection?
5 Answers
5
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