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Where do I use delegates? [closed]

What are some real world places that call for delegates? I'm curious what situations or patterns are present where this method is the best solution. No code required. ...
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How to read a text file into a list or an array with Python

...cters 3 by row (a,b,c, d,e,f, etc) and apply the procedure described above what you get is a list like this: ['a', 'b', 'c\nd', 'e', ... ] (note the item 'c\nd'). I'd like to add that, the above problem notwistanding, this procedure collapses data from individual rows in a single mega-list, usually...
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Perform .join on value in array of objects

...cts to something (in this case a property). I think Array.prototype.map is what you're looking for if you want to code functionally. [ {name: "Joe", age: 22}, {name: "Kevin", age: 24}, {name: "Peter", age: 21} ].map(function(elem){ return elem.name; }).join(","); In modern JavaScript: ...
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What's the difference between := and = in Makefile?

For variable assignment in Make, I see := and = operator. What's the difference between them? 3 Answers ...
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How do I call one constructor from another in Java?

...from another (within the same class, not from a subclass)? If yes how? And what could be the best way to call another constructor (if there are several ways to do it)? ...
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Django's SuspiciousOperation Invalid HTTP_HOST header

... name and the IP address is not in the ALLOWED_HOSTS - or at least that is what was happening with me - I could repro it by point my browser to the IP address. – markmnl May 17 '14 at 2:38 ...
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How to launch html using Chrome at “--allow-file-access-from-files” mode?

...on, but it is not in fact an answer to the question. The question was not "what is the best way to access local files in chrome" it was specifically "how do I launch with this flag". If you are aware of the risks and don't open anything you didn't create, or if you aren't even online.. it's perfectl...
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How do I fix a NoSuchMethodError?

I'm getting a NoSuchMethodError error when running my Java program. What's wrong and how do I fix it? 28 Answers ...
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Python, compute list difference

In Python, what is the best way to compute the difference between two lists? 14 Answers ...
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Insert line break inside placeholder attribute of a textarea?

... What you could do is add the text as value, which respects the line break \n. $('textarea').attr('value', 'This is a line \nthis should be a new line'); Then you could remove it on focus and apply it back (if empty) on blu...