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Why does make think the target is up to date?

... not-file-related targets, you should make them phony as follows: .PHONY: all test clean Note that you can declare all of your phony targets there. share | improve this answer | ...
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Do you use NULL or 0 (zero) for pointers in C++?

...ded. That's less common these days. If you have to name the null pointer, call it nullptr; that's what it's called in C++11. Then, nullptr will be a keyword. That said, don't sweat the small stuff. share | ...
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Form inside a table

... A form is not allowed to be a child element of a table, tbody or tr. Attempting to put one there will tend to cause the browser to move the form to it appears after the table (while leaving its contents — table rows, table cells, inputs,...
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How do I create a dynamic key to be added to a JavaScript object variable [duplicate]

... Square brackets: jsObj['key' + i] = 'example' + 1; In JavaScript, all arrays are objects, but not all objects are arrays. The primary difference (and one that's pretty hard to mimic with straight JavaScript and plain objects) is that array instances maintain the length property so that it r...
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What does do?

...15 Update This answer was posted several years ago and now the question really should be should you even consider using the X-UA-Compatible tag on your site? with the changes Microsoft has made to its browsers (more on those below). Depending upon what Microsoft browsers you support you may not ne...
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Cmake vs make sample codes?

...tatlib.a and libmydynlib.so which are both also built from source. Additionally, prog uses the library libstuff.a in stuff/lib and its header in stuff/include. The Makefile by default builds a release target, but offers also a debug target: #Makefile CC = gcc CPP = g++ RANLIB = ar rcs RELEASE =...
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Efficient way to rotate a list in python

...s in the list following the popped item, because the data structure shifts all following elements toward the front of the list. Only the last element can be popped in O(1) time for this reason. – Kirk Boyer Jun 17 '18 at 21:26 ...
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One Activity and all other Fragments [closed]

I am thinking of implementing one screen with Activity and all other sreens with Fragments and managing all the fragments thru the activity . ...
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What's the difference between jquery.js and jquery.min.js?

... They are both the same functionally but the .min one has all unnecessary characters removed in order to make the file size smaller. Just to point out as well, you are better using the minified version (.min) for your live environment as Google are now che...
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Why create “Implicitly Unwrapped Optionals”, since that implies you know there's a value?

...e two main reasons that one would create an Implicitly Unwrapped Optional. All have to do with defining a variable that will never be accessed when nil because otherwise, the Swift compiler will always force you to explicitly unwrap an Optional. 1. A Constant That Cannot Be Defined During Initializ...