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Display help message with python argparse when script is called without any arguments
This might be a simple one. Assume I have a program that uses argparse to process command line arguments/options. The following will print the 'help' message:
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Easiest way to read from and write to files
.... XmlDocument.Save(filename). But of course the difference is that usually one Xml object corresponds with one file, while several strings form one file.
– Roland
Sep 15 '14 at 13:23
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Correct way to define C++ namespace methods in .cpp file
Probably a duplicate, but not an easy one to search for...
8 Answers
8
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What is the syntax for an inner join in LINQ to SQL?
... or select on fields from both joined tables, instead of just on fields of one of the two tables (the DealerContact table in this answer's example), here's an example: stackoverflow.com/a/29310640/12484
– Jon Schneider
Mar 27 '15 at 21:41
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About .bash_profile, .bashrc, and where should alias be written in? [duplicate]
.../.bashrc but only ~/.profile or ~/.bash_profile, so you should source that one manually from the latter. You'll see me do that in my ~/.profile too: source ~/.bashrc.
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How do I use the conditional operator (? :) in Ruby?
...t jumped past all the syntactical aspects and went right to what the questioner was trying to accomplish.
– Mike Buckbee
May 5 '14 at 5:21
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Django. Override save for model
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Check the model's pk field. If it is None, then it is a new object.
class Model(model.Model):
image=models.ImageField(upload_to='folder')
thumb=models.ImageField(upload_to='folder')
description=models.CharField()
def save(self, *args, **kwargs)...
Why not use always android:configChanges=“keyboardHidden|orientation”?
...lease don't do the default reset when the keyboard is pulled out, or the phone is rotated; I want to handle this myself. Yes, I know what I'm doing"
Is this a good thing? We shall soon see...
No worries?
One of the pros you start with is that there is:
no need to worry about your activity bee...
Quick Sort Vs Merge Sort [duplicate]
...gorithm demonstrating any complexity C where C is worse than O(n log n) exponentially decreases as the input size grows.
– Sam Harwell
Oct 13 '09 at 2:35
3
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Android 4.3 menu item showAsAction=“always” ignored
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Can someone explain WHY this works? Why is there a need to extend a custom namespace? Little confused.
– dineth
Nov 8 '13 at 1:45
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