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What is the pythonic way to avoid default parameters that are empty lists?
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def my_func(working_list=None):
if working_list is None:
working_list = []
working_list.append("a")
print(working_list)
The docs say you should use None as the default and explicitly test for it in the body of the function.
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How can I check in a Bash script if my local Git repository has changes?
There are some scripts that do not work correctly if they check for changes.
13 Answers
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Is there shorthand for returning a default value if None in Python? [duplicate]
In C#, I can say x ?? "" , which will give me x if x is not null, and the empty string if x is null. I've found it useful for working with databases.
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How to filter multiple values (OR operation) in angularJS
...ant to use the filter in angular and want to filter for multiple values, if it has either one of the values then it should be displayed.
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Apache Commons equals/hashCode builder [closed]
... .toHashCode();
}
@Override
public boolean equals(final Object obj){
if(obj instanceof Bean){
final Bean other = (Bean) obj;
return new EqualsBuilder()
.append(name, other.name)
.append(length, other.length)
.append(children, other.children)
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How exactly does tail recursion work?
I almost understand how tail recursion works and the difference between it and a normal recursion. I only don't understand why it doesn't require stack to remember its return address.
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How do I generate a constructor from class fields using Visual Studio (and/or ReSharper)?
... to generate a constructor based on fields that are already in the class. If you try to instantiate the class with a signature that doesn't match any existing ones, it will offer to generate that constructor for you.
– James Kolpack
Jun 4 '10 at 17:45
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How to check a string for specific characters?
How can I check if a string has several specific characters in it using Python 2?
5 Answers
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How to condense if/else into one line in Python? [duplicate]
Is there a way to compress an if / else statement to one line in Python?
I oftentimes see all sorts of shortcuts and suspect it can apply here too.
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Check if object value exists within a Javascript array of objects and if not add a new object to arr
If I have the following array of objects:
18 Answers
18
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