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Getting the first and last day of a month, using a given DateTime object

I want to get the first day and last day of the month where a given date lies in. The date comes from a value in a UI field. ...
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What's the fastest way to loop through an array in JavaScript?

...dern browsers: https://jsben.ch/wY5fo Currently, the fastest form of loop (and in my opinion the most syntactically obvious). A standard for-loop with length caching var i = 0, len = myArray.length; while (i < len) { // your code i++ } I would say, this is definitely ...
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Calendar returns wrong month [duplicate]

... Months are indexed from 0 not 1 so 10 is November and 11 will be December. share | improve this answer | follow | ...
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What really is a deque in STL?

I was looking at STL containers and trying to figure what they really are (i.e. the data structure used), and the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made ...
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Writing to an Excel spreadsheet

... to write some data from my program to a spreadsheet. I've searched online and there seem to be many packages available (xlwt, XlsXcessive, openpyxl). Others suggest to write to a .csv file (never used CSV and don't really understand what it is). ...
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How do I shuffle an array in Swift?

How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck. ...
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What is the difference between LL and LR parsing?

... At a high level, the difference between LL parsing and LR parsing is that LL parsers begin at the start symbol and try to apply productions to arrive at the target string, whereas LR parsers begin at the target string and try to arrive back at the start symbol. An LL parse i...
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Creating range in JavaScript - strange syntax

... Understanding this "hack" requires understanding several things: Why we don't just do Array(5).map(...) How Function.prototype.apply handles arguments How Array handles multiple arguments How the Number function handles arguments ...
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Rolling back local and remote git repository by 1 commit

I've read the similar posts on this topic, and can't for the life of me figure out how to do this properly. 14 Answers ...
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When to use a linked list over an array/array list?

I use a lot of lists and arrays but I have yet to come across a scenario in which the array list couldn't be used just as easily as, if not easier than, the linked list. I was hoping someone could give me some examples of when the linked list is notably better. ...