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Appending an element to the end of a list in Scala
I can't add an element of type T into a list List[T] .
I tried with myList ::= myElement but it seems it creates a strange object and accessing to myList.last always returns the first element that was put inside the list. How can I solve this problem?
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How to use Jackson to deserialise an array of objects
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One extra note, if while parsing you get an error such as JsonMappingException: No suitable constructor found for type then it means you need to added a default constructor to your class adding a private no-arg constructor fixed it for me.
– Synta...
Rolling or sliding window iterator?
I need a rolling window (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for d...
Windows recursive grep command-line
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edited Nov 18 '14 at 20:05
MPelletier
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answ...
Is there a CSS parent selector?
...laration of a Selector Subject with no child selector (#a! alone throws an error, #a! p works), and so the others will not works either because of Uncaught TypeError: Cannot call method 'split' of undefined: see jsfiddle.net/HerrSerker/VkVPs
– yunzen
Apr 16 '13...
SVN change username
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I get an error "svn: E155024: Invalid source URL prefix: 'protocol://currentUser@server/path' (does not overlap target's URL 'protocol://newUser@server/path')" [with my real URLs, of course]
– James Roth
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List of tuples to dictionary
...ut-313-7bb3559567ff>", line 1, in <module> dict(my_list) TypeError: 'Dictionary' object is not callable
– CKM
Apr 23 '18 at 5:57
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How to compare arrays in JavaScript?
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While this only works for scalar arrays (see note below), it is short:
array1.length === array2...
Python - write() versus writelines() and concatenated strings
...ou provide a list of strings, it will raise an exception (by the way, show errors to us!).
writelines(arg) expects an iterable as argument (an iterable object can be a tuple, a list, a string, or an iterator in the most general sense). Each item contained in the iterator is expected to be a string....
Remove all values within one list from another list? [duplicate]
I am looking for a way to remove all values within a list from another list.
7 Answers
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