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Delete element in a slice
...= append(a[:i], a[i+1:]...)
... is syntax for variadic arguments in Go.
Basically, when defining a function it puts all the arguments that you pass into one slice of that type. By doing that, you can pass as many arguments as you want (for example, fmt.Println can take as many arguments as you wa...
Why C# fails to compare two object types with each other but VB doesn't?
I have two objects in C# and don't know if it's Boolean or any other type.
However when I try to compare those C# fails to give the right answer.
I have tried the same code with VB.NET and that did it !
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Matrix Transpose in Python
I am trying to create a matrix transpose function for python but I can't seem to make it work.
Say I have
18 Answers
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Check if a Class Object is subclass of another Class Object in Java
...e().equals(String.class) . The same applies for other non-derived classes. But how do I check derived classes? E.g. LinkedList as subclass of List . I can't find any isSubclassOf(...) or extends(...) method. Do I need to walk through all getSuperClass() and find my supeclass by my own?
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What's the meaning of interface{}?
I'm new to interfaces and trying to do SOAP request by github
6 Answers
6
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Get a specific bit from byte
I have a byte, specifically one byte from a byte array which came in via UDP sent from another device. This byte stores the on/off state of 8 relays in the device.
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How do I get the row count of a pandas DataFrame?
I'm trying to get the number of rows of dataframe df with Pandas, and here is my code.
14 Answers
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How do I compare strings in Java?
I've been using the == operator in my program to compare all my strings so far.
However, I ran into a bug, changed one of them into .equals() instead, and it fixed the bug.
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How to convert a string with comma-delimited items to a list in Python?
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Like this:
>>> text = 'a,b,c'
>>> text = text.split(',')
>>> text
[ 'a', 'b', 'c' ]
Alternatively, you can use eval() if you trust the string to be safe:
>>> text = 'a,b,c'
>>> text = eval('[' + text + ']')
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Fastest way to check if a value exists in a list
...a
Clearest and fastest way to do it.
You can also consider using a set, but constructing that set from your list may take more time than faster membership testing will save. The only way to be certain is to benchmark well. (this also depends on what operations you require)
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