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How to check if a file exists in Documents folder?

... Or just [0] via index accessing – temporary_user_name Dec 16 '14 at 0:09 firstObject is more safe than [0] a...
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How do I remove all non alphanumeric characters from a string except dash?

How do I remove all non alphanumeric characters from a string except dash and space characters? 13 Answers ...
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How to check what version of jQuery is loaded?

... containing the version number. If you get back a version number -- usually as a string -- then jQuery is loaded and that is what version you're working with. If not loaded then you should get back undefined or maybe even an error. Pretty old question and I've seen a few people that have alrea...
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Should operator

That's basically the question, is there a "right" way to implement operator<< ? Reading this I can see that something like: ...
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Java SE 6 vs. JRE 1.6 vs. JDK 1.6 - What do these mean?

I see many different Java terms floating around. I need to install the JDK 1.6. It was my understanding that Java 6 == Java 1.6. However, when I install Java SE 6, I get a JVM that reports as version 11.0! Who can solve the madness? ...
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How does the keyword “use” work in PHP and can I import classes with it?

... 10 Answers 10 Active ...
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Javascript checkbox onChange

... Here's a JsFiddle where all the different ways can be tested: click, keyboard, label and accesskey. They all trigger the event in Firefox. – Roman Starkov May 8 '15 at 12:59 ...
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How to modify Github pull request?

...you need more commits You push c11,c21,c31 to b The pull request now shows all 6 six commits share | improve this answer | follow | ...
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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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Design Patterns: Factory vs Factory method vs Abstract Factory

... All three Factory types do the same thing: They are a "smart constructor". Let's say you want to be able to create two kinds of Fruit: Apple and Orange. Factory Factory is "fixed", in that you have just one implementation ...