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Changing all files' extensions in a folder with one command on Windows
How can I use the Windows command line to change the extensions of thousands of files to *****.jpg ?
11 Answers
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Friend declaration in C++ - difference between public and private
... there's no difference - you just tell that class B is a friend of class A and now can access its private and protected members, that's all.
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vertical & horizontal lines in matplotlib
I do not quite understand why I am unable to create horizontal and vertical lines at specified limits. I would like to bound the data by this box. However, the sides do not seem to comply with my instructions. Why is this?
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Excel VBA - exit for loop
... answered Feb 23 '12 at 14:39
DanDan
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Maven command to determine which settings.xml file Maven is using
How do I use maven command line to determine which settings.xml file Maven is picking up?
6 Answers
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What is the 'cls' variable used for in Python classes?
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The distinction between "self" and "cls" is defined in PEP 8 . As Adrien said, this is not a mandatory. It's a coding style. PEP 8 says:
Function and method arguments:
Always use self for the first argument to instance methods.
Always use cls for the firs...
Python Dictionary to URL Parameters
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Use urllib.urlencode(). It takes a dictionary of key-value pairs, and converts it into a form suitable for a URL (e.g., key1=val1&key2=val2).
If you are using Python3, use urllib.parse.urlencode()
If you want to make a URL with repetitive params such as: p=1&p=2&p=3 you have t...
Selecting with complex criteria from pandas.DataFrame
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Sure! Setup:
>>> import pandas as pd
>>> from random import randint
>>> df = pd.DataFrame({'A': [randint(1, 9) for x in range(10)],
'B': [randint(1, 9)*10 for x in range(10)],
'C': [randint(1, 9...
What are all codecs and formats supported by FFmpeg?
I need a list of codecs and formats supported by FFmpeg. Where can I find it?
4 Answers
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Adding additional data to select options using jQuery
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@ithcy All browsers support (and have for 10+ years) "invalid" attributes in the markup, and getting/setting these through the DOM. HTML5 "data" attributes are just custom attributes with a naming scheme and a new standard that declares them to be legal....