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How does the keyword “use” work in PHP and can I import classes with it?

...ou want to access those class objects then you can do the following: $smtp_mailer = new SMTPMailer; $mailgun_mailer = new MailgunMailer; It will reference the original class. Some may get confused that then of there are not Similar class names then there is no use of use keyword. Well, you can u...
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What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?

... like unomadh GNU make example. From the GNU make manual on the Function Call Syntax (emphasis mine): […] If the arguments themselves contain other function calls or variable references, it is wisest to use the same kind of delimiters for all the references; write $(subst a,b,$(x)), not $(sub...
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Can't install Ruby under Lion with RVM – GCC issues

...extra parameter rvm install 1.9.3 --with-gcc=clang --with-readline-dir=$rvm_path/usr it installed successfully. – leandro Nov 27 '11 at 13:01 7 ...
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C# Entity-Framework: How can I combine a .Find and .Include on a Model Object?

... I would really recommend using the latter (SingleOrDefault), ToList will retrieve all entries first and then select one – Sander Rijken Sep 8 '11 at 13:51 ...
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In Python, how do I convert all of the items in a list to floats?

I have a script which reads a text file, pulls decimal numbers out of it as strings and places them into a list. 12 Answers...
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Get file size, image width and height before upload

... when the value of i is alerted in the callback function reader.onload it shows a random increment! e.g. for 4 files the value as alerted was 0 3 2 1 . Can any one explain that? – freerunner Mar 2 '14 at 11:16 ...
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What are my environment variables? [closed]

... I am not sure if thats what you want, but try printenv This will show you all your environment variables. About where they are stored Linux: where are environment variables stored? How to set Shell Environment Variables http://www.codecoffee.com/tipsforlinux/articles/030.html Happy reading :-)...
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How can I determine whether a 2D Point is within a Polygon?

...integers. Many systems use integers for UI painting (pixels are ints after all), but macOS for example uses float for everything. macOS only knows points and a point can translate to one pixel, but depending on monitor resolution, it might translate to something else. On retina screens half a point ...
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Does Java have a complete enum for HTTP response codes?

...pe in some standard Java class library that defines symbolic constants for all of the valid HTTP response codes. It should support conversion to/from the corresponding integer values. ...
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switch case statement error: case expressions must be constant expression

...instead of an if-else: private enum LayoutElement { NONE(-1), PLAY_BUTTON(R.id.playbtn), STOP_BUTTON(R.id.stopbtn), MENU_BUTTON(R.id.btnmenu); private static class _ { static SparseArray<LayoutElement> elements = new SparseArray<LayoutElement>(); } ...