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What is the difference between ? and Object in Java generics?
...me String");
All of the above method calls will result in a compile-time error because Java doesn't know what the Value type of the HashMap inside map is.
You can still get a value out of the hash map. Although you "don't know the value's type," (because you don't know what type of hash map is i...
How to grep and replace
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Why do I get "sed: RE error: illegal byte sequence". And yes, I added the -i "" for OS X. It works otherwise.
– taco
Jun 16 '16 at 19:51
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Quicksort: Choosing the pivot
When implementing Quicksort, one of the things you have to do is to choose a pivot. But when I look at pseudocode like the one below, it is not clear how I should choose the pivot. First element of list? Something else?
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Convert a list to a data frame
I have a nested list of data. Its length is 132 and each item is a list of length 20. Is there a quick way to convert this structure into a data frame that has 132 rows and 20 columns of data?
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VIM + JSLint?
...cter"] + 1) + ":" + obj["reason"] );
This makes in mylintrun.js output a error list that can be used with the VIM quickfix window (:copen).
Now set the following in VIM:
set makeprg=cat\ %\ \\\|\ /my/path/to/js\ /my/path/to/mylintrun.js\ %
set errorformat=%f:%l:%c:%m
where you have to change /...
How do you get a string to a character array in JavaScript?
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How to upper case every first letter of word in a string? [duplicate]
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answered Jul 19 '09 at 13:05
tommyLtommyL
49944 silver badges88 bronze badges
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wget/curl large file from google drive
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Doesn't work as of August 2019. Error: "Permission denied: drive.google.com/uc?id=0B7EVK8r0v71pWEZsZE9oNnFzTm8 Maybe you need to change permission over 'Anyone with the link'?" And it's the publicly downloadable CelebA dataset so it should be ok. I acquir...
How would you make a comma-separated string from a list of strings?
What would be your preferred way to concatenate strings from a sequence such that between every two consecutive pairs a comma is added. That is, how do you map, for instance, ['a', 'b', 'c'] to 'a,b,c' ? (The cases ['s'] and [] should be mapped to 's' and '' , respectively.)
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Check if a number is int or float
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@David: issubclass would be an error, as it works on classes. isinstance checks if a given object is an instance of a class or one of that class's subclasses, so it's perfectly generic. Methinks that isinstance(obj, cls) is equivalent to issubclass(obj.__c...